(1957–1958) Basic Survey and Inventory of Species Present in the Pecos River of Texas

--- Page 1 --- ated Report of Fisheries Investigations Basic Survey and Inventory of Species Present in the Pecos River of Texas by Lawrence Campbell Project Leader Dingell-Johnson Project F-5-R-5, Job B-13 April 16, 1957 - April 16, 1958 H. D. Dodgen - Executive Secretary Texas Game and Fish Commission Austin, Texas Marion Toole Kenneth C. Jurgens & William H. Brown Coordinator Assistant Coordinators --- Page 2 --- Job Completion Report State of TEXAS Project No. F-5-R-5 Name: Fisheries Investigations and Surveys of the Waters of Region 3-B. Job No. B-13 Title: Basic Survey and Inventory of Species Present in the Pecos River of Texas. Period Covered: April 16, 1957 - April 16, 1958 Abstract: The Pecos River of Texas was found to be a highly saline stream which is divided into three main ecological associations. The upper reaches of the river are characterized by turbid, intermittent pools.\ In the middle reaches of ‘the river are sluggish pools, which are long, deep and infested with vegetation. ~ The lower river, to its confluence with the Rio Grande, is spring fed and has. permanent flow. During the study period, the most im- portant fish species in the upper reaches were the white bass and gizzard shad while channel catfish and minnows were the most important species in the remainder of the stream. “In all, “forty- nine species of fourteen fish families were identified. Pollution, public access and water conservation practices were found to be the primary fishery problems of the river. It is recommended that work be done to solve these problems, that experimental stock- ing be continued, and that a future means of utilizing the salt playa lakes and the potential stream areas in the mountains be sought. Objectives: To gather fundamental data on the above waters in regard to their physical, chemical and biological aspects. To determine the distribution of fish species present, their relative abundance and the ecological factors influencing their distribution and production. Cooperating agencies: Texas Board of Water Engineers United States Geological Survey Red Bluff Power and Water Control District International Boundry and Water Commission Procedure: A. Basic Survey Standard procedures were employed to secure the information necessary to complete stream survey forms similar to those given by Lagler in his HANDBOOK OF FRESHWATER FISHERY BIOLOGY. --- Page 3 --- B. Inventory of Species Twenty-eight seining stations were established to determine the fish species present, their distribution, and their relative abundance. 1. Attempts were made to collect fish at each seining station more than once but because of changing stream conditions this was often impossible. 2. Gill net collections were taken whenever access permitted and the stream was sufficiently deep and clear of vegetation or obstructions. 3. At appropriate intervals in the stream areas worked, water analyses were made anx— recorded along with other data pertaining to water quality and condition including pH, air and water temperatures. 4. Where field identification of fish specimens was in doubt, individuals were preserved in 10% formalin and examined in the laboratory. 5. The portions of the watershed not covered in this survey were confined <o the Davis Mountains Area. Findings: The Pecos River rises in Mora, Santa Fe, San Miguel, and Torrance Counties of New Mexico. Its contributing watershed above the Texas=-New Mexico Border contains s20ut 20- 239 square miles. The average discharge into Red Bluff Reservoir is about 315.¢c. f. = The watershed is characterized by short grasses and very arid sandy plains. I: is the desert or semi-desert that was a barrier to westward migration and development s20ut one hundred years ago. It is the Llano Estacado of history. The mountains that rise out of this desert are known as the Santa Fe Mountains and are a part of the Rocky Mowcain System. A series of reservoirs beginning with Nichols Reservoir on Santa Fe Creek and including Almogordo Reservoir, Lake McMillan, and Lake Avalon regulate stream <-2w into Texas. These reservoirs have a combined storage capacity of 182,000 plus acre set. Diversions and ground-water withdrawals above the state line provide irrigatic# for 181,500 acres of New Mexico farm land. Most of the water entering Texas from the Upper Pecos River is controlled zy the Red Bluff Water Power and Control District with offices in Pecos, Texas. Excer: for an unknown portion of the quantities of local run-off, insignificant seepage, anc s_ight contributions from springs into the river; all stream flow is controlled by He: 3luff Reservoir. This reservoir has a potential storage of 307,000 acre feet volume =cd has not been filled to spillway capacity since its construction in 1937. For conve“ence iz description of the various portions of the watershed and the stream and becauss of the difference in the ecological aspect of the watershed and stream, it was surveys: in a southward direction. The area worked was arbitrarily subdivided into three ser:“‘ons. Detailed data on hydrology*and chemical content*fre included in appropriate ches. The following descriptions are intended only to provide a general description of tm region=— From Red Bluff Reservoir a vast irrigation system, of an estimated 128 mis of canals and laterals, branches out to irrigate about 21,000 acres, most of whict are located between Mentone and Imperial, Texas. Permanent earthen and concrete torsion dams and, brush dams for temperary use, channel the released water from the ri== bed t& its destined area. A 1,000 acre foot control reservoir is employed for tempar=y storeg@= and is located in a bend of the river about ten miles northwest of Imperial. * See Tables I, II & III. %*® See Table IV. --- Page 4 --- On the flats at the base of the Guadalupe Mountains below Sierra Diablo, South of Pecos, and to a lesser extent throughout this region, natural playa salt lakes such as Lake Toyah occur. These lakes are devoid of fish life. — Alkaline marshes are often adjacent to the stream and discharge large quantities of chlorides into the river bed. An example of the extent of this discharge is the 274 tons per day that are estimated to be discharged into Red Bluff reservoir on occasions. Above Imperial the stream is characterized by intermittent pools that are often created and maintained by the previously described diversion dams and by natural depressions in the river bed. During inventory, only two streams were encountered in this region where any stability of flow was observed. A tributary of Delaware Creek, located in the Guadalupe Mountains in McKittrick Canyon on the J. C. Hunter ranch was maintained by springs and seepage for about fourteen miles before it entered a porousformation about seven miles west of the Van Horn-Carlsbad highway near Pine Springs. This was private stream and was apparently successfully producing trout fishing for the owners. At present it has no significance in considering stream management for the river. A number of springs such as Maderia Springs, San Solomon Springs and others provide flow into Balmorhea Lake, an irrigation reservoir near that city. Because of the premium placed on water for irrigation, no consideration has been given to fishery. management; and fluctuations in this reservoir prevent it from providing any significant fishery yield. It does not contribute to the river.at any time. This stream area is unstable and offers little opportunity for fishery development. Pools in the stream are usually turbid, low in oxygen and high in carbon dioxide content, are saline and have silty bottoms. Recause of fluctuation vegetation as saw grass, (Zizaniopsis s sp. ds and cattails (Typha a sp. ) are not management problems. The stream banks are usually moderately steep, but are often covered with salt cedar to such an extent that access is very difficult. From Imperial to Sheffield the stream is characterized by large pools through which a minimum flow is usually maintained, although such flow is often through gravel deposits between pools. The stream is much deeper and is permanent in nature. Dense vegetation makes sampling by seines or nets extremely difficult. Chara (Chara sp.), coontail (Cerataphyllum sp.), and parrots feather (Myriophullum sp.) are e the principal types. Cattails, saw grass and bullrushes are also abundant in localities. The water is still highly saline; however, it is clear and there is no deficiency in oxygen or carbon dioxide content. Severe and extensive pollution from oil fields occurrs from Girvin to Bakers- field to Sheffield. This will be discussed later under that heading. Redfish were released in this area and have survived. a From Sheffield to the river mouth the stream is characterized by spring fed associa- tions. Independence Creek, Live Oak Creek, and others provide permanent and significant flew. Access is extremely difficult t because of the banks which often are over one hundred _feet above the river bed. There is no vegetation excepting algae and other pelagic “aquatics. The stream bed is rock.or coarse gravel. The water is unusually clear and the dissolved oxygen and carbon dioxide content is very favorable for fish life. This third area has a larger quantity of water than the combined totals for the other areas described, has more and better game fish populations, and offers excellent management prospects. However, public access is not available at this time. The following charts are regarded as the best expression of water quality and hydrol- ogy for the river during the survey period. (See Tables I through IV) --- Page 5 --- Historical Change - The following information or comment is included to briefly illustrate the changes that have taken place and to designate their effect on fish life and on the prospects for future fishery development. In 1849, a Lt. French, while en- gaged in finding suitable travel routes through western Texas, described the Pecos River as "a narrow deep stream, its waters turbid and bitter, and carry, in both mechanical _mixture and chemical solution, more impurities than any other river in the south. The only inhabitants of its waters are catfish". Others of that period describe the river as being too deep and swift for safe crossing except at "Horsehead Crossing" near Imperial. Many springs Comanche, Leon, White Sands, Ojo Escondidio, Madeiria, and many others provided permanent stream flow, and the ground water was contributing in much of the area. After the settlement of the country, all of these waters were used in irrigation. This development and exploitation of the rivers sources has continued until today. None of the above springs are contributing; the ground water is at least eight or ten feet lower than it was at the turn of the century and the exploitation is continu- ing at a rapid pace. (See attached map) Pollution - As illustrated by the above description, the Pecos has been polluted by salt possibly since its creation. This natural pollution results primarily from fractures or faults in subsurface formations that permit the percolative action of ground waters to deposit these minerals into the stream. Alkali deposits on the surface add mineral to run-off, and salt springs that are naturally formed by aquifers are also contributive. Man made pollution is primarily from two sources. Oil field exploration and development for the past thirty years have resulted in both surface and subsurface release of petroleum and salt water and other materials that are injurious to fish life. Many dams and dikes that are constructed to retain oil well waste become full and overflow with run-off; wastes leak from production procedures; subsurface pollution occurs from wells improperly sealed. A man near Iraan, Texas, makes his living from skimming the oil off the surface of the stream that has leaked or has been lost from wells in that area. The complexity of this problem on the river between Grandfalls and Sheffield would require an extensive study and costly equipment. Probably two men for a year or more. Pollution also occurs from agricultural methods. Crop dusting or spraying is carried out extensively and some of the substances used are residual in nature and are carried by run-off into the stream in sufficient concentrations to cause fish kills. Unplugged wells where responsibility can not be fixed are present. Fish Populations: Twenty eight stations on the stream were netted or seined. Because of stream conditions, it was often impossible to duplicate exactly (in instances where two collec- tions were made at a particular station), however, every reasonable effort at duplication was made. Forty-nine species of fourteen families were positively identified and at least six additional species are believed to be present. The following annotated check- list is regarded as the better information pertaining to species distribution. Tables VI and VII are primarily for relative abundance. Other aspects of the fish populations are covered under trends and influences. : --- Page 6 --- Annotated Checklist of Species of Fish in The Pecos River of Texas Lepisosteidae (gars) ¥ Lepisosteus osseus (longnose gar) - common and abundant in localities. The most numerous and widely distributed species for this group. Lepisosteus productus (spotted gar) - rare found only in the upper and primary stream and there only below Grandfalls. y Lepisosteus spatula (alligator gar) - taken only near the mouth of the river and probably does not occur more than five or ten miles north of the Rio Grande. Clupeidae (herrings) Dorosoma cepedianum (gizzard shad) - common and abundant throughout the watershed, one } of the most important forage species, possibly the greatest population by weight. Salmonidae (trouts) Salmo gairdneri (rainbow trout) - McKittrick canyon in the Guadalupe Mountains only. There is evidence that this species is reproducing successfully; however, the original stock were imported from New Mexico in 1929. Characidae (tetras) Astyanax fasciatus (banded tetra) - common below Sheffield and rare but present to Red Bluff Reservoir. Extreme fluctuation in population in localities. Catostomidae (suckers and buffalofishes) Cycleptus elongatus (blue sucker) - common near the mouth but restricted to that area. Ictiobus bubalus (smallmouth buffalo) - rare but present as far north as the Texas-New Mexico line. a Moxostoma congestum (gray redhorse sucker) - common and distributed more or less uniforn- | ly throughout the watershed. Wa Carpiodes carpio (river carpsucker) - common and abundant except in the last few miles near the mouth of the river. Cyprinidae (shiners and minnows) Cyprinus carpio (German carp) - common and abundant on a locality basis. More abundant in the upper one half of the watershed. Carassius auratus (goldfish) =- introduced and rare. Taken near Imperial. Notemigonus crysoleuces (golden shiner) - rare, but fairly widely distributed. Probably introduced by hatchery release. --- Page 7 --- Hybopsis aestivalis ‘speckled chub) - rare, taken from Independence Creek only. Phenacobius mirabilis (suckermouth minnow) - extremely rare, regarded as released by bait dealers. Notropis percobromus (plains shiner) - taken in the upper watershed as far south as Buena-Vista-Crane highway crossing. Notropis venustus (spottail shiner) - restricted to the mid areas of the watershed abun- dant only on Chandler Ranch near Sheffield. Notropis lutrensis ‘redhorse shiner) - common and abundant, the most numerous, important, ) and widely distributed forage species for the watershed. Dionda episcopa (roundnose minnow) - the dominant minnow in most of the area where it > occurs. Found below Sheffield. Hybognathus placita {plains minnow) < rare and confined to the upper one third of the watershed. Pimephales vigilax (parrot minnow) - common but not numerous above McCamey. Campostoma anomalum (stoneroller) - taken in Independence Creek and at the mouth of the river only. Ameiuridae (catfishes) wf Ictalurus punctatus (channel catfish) - the most common and widely distributed of this group. Probably the most important game species for most of the watershed. Ictalurus furcatus (blue catfish) - taken near the mouth only. Abundant in that area. Ictalurus natalis (yellow bullhead) - rare in the stream areas below Imperial, but very abundant above that area. Ictalurus melas (black bullhead) - confined to localities but abundant where found. Pylodictus olivaris {flathead catfish) - common but never numerous. Cyprinodontidae (killifishes and topminnows) Fundulus kansae (plains killifish) - common and distributed throughout the upper two thirds of the watershed. Fundulus sp. (Pecos River killifish) - presumably an undescribed species. Found at Wink Lake, at several stations near Imperial and Grandfalls. Cyprinodon variegatus (variegated cyprinodon) - taken near Imperial and presumably in- i troduced. Cyprinodon bovinus (Leon Springs pupfish) - not found but listed in the literature for this watershed, presumed extinct. --- Page 8 --- vs Cyprinodon elegans (Comanche Springs pupfish) - not actually collected and identified but taken from Hubbs checklist. Cyprinodon sp. (Pecos River pupfish) - common in the upper watershed. Poeciliidae (mosquitofishes) Gambusia nobilis (Pecos gambusia) - common in upper watershed. Gambusia affinis (mosquitofish) - common throughout watershed. Mugilidae (mullets) Mugil cephalus (striped mullet) - not actually taken but reported from the mouth of the Pecos. Serranidae (basses) Roccus chrysops (striped bass) - common and when conditions permit, the most important game species for the watershed. Centrarchidae (black basses and sunfishes) Micropterus punctulatus (spotted bass) - rare and this may be a case of misidentification. “a Chaenobryttus gulosus (warmouth bass) - common but never numerous. a y Lepomis cyanellus (green sunfish) - common and abundant found throughout the watershed. Micropterus salmoides (largemouth bass) - rare but widely distributed. Lepomis microlophus (redear sunfish) - common but never numerous in the upper watershed. Not taken near mouth. Lepomis macrochirus (bluegill sunfish) - common and abundant. Probably the most numerous “7 species of this group. Lepomis humilis (orange spotted sunfish) - common but never abundant. Lepomis auritus (yellowbelly sunfish) - common in the upper watershed as far south as Iraan, but never abundant. Lepomis megalotis (longear sunfish) - common and abundant. Some evidence of hybridization in a number of individuals. Pomoxis annularis (white crappie) - rare and localized in distribution. Percidae (perches and darters) Hadropterus sp. (Pecos darter) - presumably an undescribed species of this genus. Percina caprodes (logperch) - found primarily below brush diversion dams in the upper watershed. Rare. --- Page 9 --- Sciaenidae (drum and weakf ishes ) Aplodinotus grunniens (freshwater drum) - common, but more abundant in the upper portions of the reservoir. J Sciaenops ocellata (redfish) - rare, known to be released by the Texas Game and Fish Commission, confined to the area near Imperial. Cichilidae (cichlids) Cichlasoma cyanoguttatum {Rio Grande cichlid) - common from Balmorhea to mouth. B. Trends and Influences of the Frincipal Fishery Populations. Killifishes and topminnows - In all areas where the stream was intermittent or where salinity was unusually high, these fishes were quick to gain dominance. In several instances where stations were rechecked it appeared that more desirable forage and game species quickly disappeared as salinity increased with a reduction of water volume in stream pools, and there was a remarkable increase in the numbers of these species. It also appeared that killifishes could tolerate crowding to an extent where there may have been an actual increase in total fish per unit volume. (The weight of killifishes and pupfish in a reduced volume may have exceeded the total weight for all species in a greater volume under different conditions.) The utility of these fish as forage for game species is undetermined, however, they have been recovered from stomachs of the redfish that were released near Imperial. The apparent ecological succession for the upper watershed appears to be a reduction of killifishes during periods when sustained run-off occurs and for a short period following this phenomena and a gradual and at times a rapid recapture of dominance by this group from game species and from minnows and shiners, Minnows and shiners - These populations and their relative density were apparently controlled by three variables. Of primary importance was stream flow and its stability, however, in some localities natural salinity and in many others salt pollution were detrimental. Pollution as discussed elsewhere also apparently controlled the game fish populations. Suckers, carp and other species of questionable benefit - As in virtually all stream areas in the region, river carpsuckers were excessive in much of the stream. However, where flow was stabilized and where the stream was unpolluted suckers, carp, and other undesirable species were not dominant. Blue suckers in the lower stream were numerous, but apparently catfishes were able to compete successfully. Gizzard shad and white bass - In the upper stream areas when run-off occurred or when periodic releases were made from Red Bluff Reservoir or Imperial Reservoir, the flow thus created had tremendous effect upon the spawning and growth rate for these species. When flow was created in the spring, extensive schools of shad were observed and during the following fall and summer white bass fishing results were excellent. Sampling before and after this phenomena confirmed this occurrance. White bass fishing can for practical purposes be considered to be the only significant fishery yield for all stream areas above Sheffield, Texas, and as previously stated this yield is virtually dependent upon uncertain and infrequent occurrances of stream flow. Further evidence of the cycle of --- Page 10 --- tremendous increase and reduction is apparent in the lower stream where populations remain relatively constant as a result of stabilized stream flow. In these areas neither shad nor white bass are dominant in their ecological station or position. It is regarded as possible that the recession phase (the cession of flow, the withdrawal of and reduct- ion of stream pools) is as important in producing this rapid and unpredictable production of utilizable fishery yield as is the opposite flood stage. o Catfishes and largemouth bass - Blue catfish dominate the area near the mouth and for a number of miles upstream; however, channel catfish are the more important for virtually all of the watershed. Flathead catfish are of lesser importance. Largemouth bass with the exception of one or two localities are of no importance on a watershed basis, and since these fish are released from the hatcheries almost every year, it is assumed that the complex of many factors prevent this species from either maintaining or developing into any fishery asset. Redfish - Approximately 500 redfish or channel bass were released by the Game and Fish Commission near Imperial, Texas, in 1955. Of this number, claims of about 200 recaptures have been made. None of these fish were captured during the last year of study, however, a report of one reaching a length of 27 inches was received indirectly and was supposedly captured about 14 stream miles from the point of release. A number of individ- uals recaptured by sportsmen and mailed to the marine biological staff for appraisal indicated that these fish were in excellent condition and had grown faster than fish of the same species spawned at approximately the same time on the coast. An experimental restocking is recommended and requested under a different job for the coming years work. Summary: 1. The Pecos River is divided into three general ecological types. (a) the upper watershed area, between Red Bluff Reservoir and Imperial, Texas, is characterized by turbid saline pools of extreme fluctuation. (bo) the mid-watershed area, from Imperial to Sheffield, is characterized by long deep pools of sluggish flow connected by gravel bars and infested with dense concentrations of aquatic vegetation. This area is more stable but is subjected to almost constant pollution from oil fields and through ag- ricultural processes. (c) the lower Pecos, the area from Sheffield to the confluence with the Rio Grande, is characterized by spring fed associations, gravel and rock bottoms, and unusually clear waters. 2. <All of the waters of the Pecos are relatively high in chlorides and there seems to be some correlation between salinity and species distribution. 3. The most important forage species for the upper Pecos is the gizzard shad and the most important game species is the white bass. These populations have extreme fluctuation in response to stream conditions. 4, The most important forage fishes for the middle and lower Pecos are shiners and minnows and the most important game species is the channel catfish. Blue catfish dominate the mouth of the stream. 5. The utility of the heavy populations of cyprinodons as forage is questionable, however, they were utilized to some extent by channel bass released near Imperial on an experimental basis. --- Page 11 --- 10. 6. The high premium on water for irrigation has decreased the upper stream flow to a point where it is nonexistent much of the time. Many historic springs that originally supplied the stream are no longer productive for various reasons, and public access is confined to insignificant and unproductive stream areas. Recommendations and Conclusions: It is concluded that because of the water conservation and utilization practices employed in the upper watershed nothing can be done at present toward development of fishery resources in that portion of the stream. Emphasis should be placed on reservoir management since these are public waters. The middle and lower Pecos offer many more potentialities for development work; however, until public access is obtained and pollu- tion more adequately controlled, only experimental work such as the introduction of suitable marine species like the redfish or the channel bass should be attempted. t is further recommended that future development and survey work be concentrated toward ob- taining public access and toward controlling pollution. If these problems are resolved, appropriate, vegetation control and fishery management procedures can be employed to increase game fish production and to aid in the fishery yield. Extensive study and investigation is also needed to determine if streams or reservoirs in the Davis, Guadalupe and other mountains may be practical, and when time permits that work should be done. Further study is also needed to determine if the playa salt lakes of the region can be made to be productive in any manner since these are potential resources that may in the future be the only waters available for fishery management or for development. Any success in that endeavor would or could materially increase the potential resources for the south- west. c a f- Prepared by Lawrence Campbell Approved by A / A+ tor! CL ~/ Project Leader Director Inland Fisheries Division Date May 20, 1959 --- Page 12 --- Table I. Month 1955 October November December 1956 January February March April May dune July August September October November December 1957 January February March April May June July August September Drainage area is 19,540 square miles. The average discharge for a 19 year period is 203,400 acre feet per year. Maximum Discharge Git 2S 5730 138 138 114 104 65 58 52 48 63 89 74 66 39 904 2h6 2,450 33 Minimum Discharge e.t.8% 87 82 104 82 29 31 35 23 22 29 26 25 41 32 55 65 20 18 15 18 23 i. 16 26 i Average ~ Discharge Cel iss 767.0 111.0 118.0 96.3 52.0 54.4 43. 39.2 Number of Days No Flow oo°o ooooooo0oooo°o°9o oooo°ceo°o9d Percent of Time No Flow Orange ooooooooo°ce:d oooooo°0°c97d Hydrology and Fluctuation of Flow Data for the Pecos River at Red Bluff, New Mexico from October 1955 through September 1957. Run-off in Acre Feet 47,150 6,620 7,270 5,920 2,990 3,340 2,570 2,410 1,790 2,110 1,870 1,830 3,240 2,630 3,980 4,120 2,2h0 1,400 1,140 3,270 1,530 1,140 7,520 1,700 --- Page 13 --- Table II. Month 1955 October November December 1956 January February March April May June July August September October November December 1957 January February March April May June July August September Averages * Maximum acre feet was 103,500 in February of 1955. Minimum acre feet was 12,750 in February of 1957. Le. Hydrology and Fluctuation Data for Red Bluff Reservoir for the Period Max. El. 115.1 115.5 116.2 116.7 116.9 116.8 115.9 112.3 116.7 107.0 100.5 94.0 92.5 93.4 95.0 96.0 95.0 86.2 86.8 87.1 89.6 88.9 96.8 94.2 116.9 from October 1955, through September 1957. (es) wi WOOO FrowmvVo 83.5 Fluc. oom a FOOrRFRPU AWHEHWOdCO WA ONO eu Oe NAWMWOORFPONEH Ww POAT aa oO ly . Lo) Avg. Acre Feet 92900 95,500 97,900 101,500 103,200 101,700 91,700 78,400 66,700 48,500 33,980 24,900 23,620 25,070 26,960 29,430 19,490 14,000 16,010 15,660 19,490 18,450 2h ,400 22 , 300 *58,145 --- Page 14 --- Table III. Month 1955 October November December 1956 January February March April May June July August September October November December 1957 January February March April May June duly August September 133 Hydrology and Fluctuation of Flow Data for the Pecos River at Girvin from October 1955 through September 1957. Maximum Minimum Average Number Percent Discharge Discharge Discharge of Days of Time e.f.s. c.f.s. Cf 68s No Flow No Flow 156 2k 40.6 fe) ) 30 23 2h.7 0 fo) 36 26 2727 ) @) 61 36 43.7 fe) ) 48 4O kh 3 9) fe) ko 34 38.8 ) fe) 36 15 25.7 fe) 0 18 10 12.6 (e) 0 12 9 10.7 fe) ) 12 42 18.9 ¢) ) 34 10 13.6 0 (e) kg 11 15.5 0 O 105 12 21.6 0 fe) 24 23 23.6 @) fo) 25 23 2k. 0 0 ah 21 B22 0 fe) 115 22 54.7 9) 0) 111 25 43.2 0) @) 2,240 25 142.0 0 ) 390 20 46.9 fe) fe) 93 15 27.0 0 ©) 51 14 18.0 ) 0 26 14 14.8 fe) 0 154 12 19.7 ) fe) Drainage area is 29,560 square miles. The average discharge for a 17 year period is 122,400 acre feet per year. Run-off in Acre Feet 2,500 1,470 1,710 2,690 2,550 2,390 1,530 74h 632 1,160 839 922 1,330 1,410 1,480 1,370 3,040 2,660 8,480 2,680 1,600 1,100 910 1,170 --- Page 15 --- Location Pecos River near Orla, Texas Toyah Creek near Pecos, Texas Pecos River near Grand Falls, Texas Date October 1955 May 1956 September 1957 October 1955 May 1956 September 195T Table IV. Air Surface Temp. Water Temp. 82 Th 70 69 87 76 8h 715 74 68 82 78 14. Water Quality Data for the Pecos River. pH 8.4 8.2 Oo PPM 1.6 10 11 COp PPM 13 15 15 Date October 1946 May 1955 September 1957 October 1946 May 1955 October 1946 April 1955 September 1957 Cl PPM 2, 300 1,650 3,490 2,060 262 3,780 4,030 3,900 Dissolved Solids 6, 330 5,180 9,050 8,160 2, hho 10,500 10, 600 10,800 Total Hardness 2,080 1,940 2,640 2,580 1,520 3,320 3,280 3,210 --- Page 16 --- 15. Table IV. Water Quality Data for the Pecos River (Continued ) Air Surface 1e}) COs. Cl Dissolved Total Location Date Temp. Water pH PPM PPM Date PPM Solids Hardness Temp. Pecos River October October near Girvin, 1955 86 7h 7.6 11 ) 1946 4,700 12,500 3,770 Texas May April 1956 70 70 7.8 y 10 1955 3 130 13, 300 3,920 September September 1957 82 76 TH 3 8 1957 5, 300 14,100 4,180 Pecos River May October near Sheffield, 1956 74 70 153 10 ) 1946 3,610 9,510 2,760 Texas September May 1957 82 76 7.1 10 1 1955 3,910 9,970 2,990 September — oe mm ome -- “- 1957 3,830 9,840 2,790 --- Page 17 --- Table V. Collection Stations on the Pecos River. Station No. 1. Below Red Bluff Dam 2. Mouth of Screwbean Draw, 3 miles below Red Bluff Dam 3. Pasotex Pipe Line Crossing, 6 miles southeast of Orla 4, Mentone Crossing Bridge on Ranch Road 302 5. Ward County Water District No. 3, Diversion Dam 6. Ward County Irrigation District No. 1 7. Highway 80 Bridge in Pecos 8. Big Valley Ward County District No. 2, Diversion Dam 9. Stream crossing 15 miles south of Ward Diversion Dam No. 2 0) Pecos County Water District No. 2, 600 feet below Diversion Dam, 18 stream miles above Grandfalls Crossing 11. Ward County Water District No. 2, 4 mile above Reeves-Pecos County Line 12. Pecos County Water District No. 2, Diversion Dam No. 2 at Royalty Crossing 13. Grandfalls Crossing 14. Pecos County Water District No. 3, Diversion Dam, Zimmerman or Imperial Reservoir 15. 4 miles above highway bridge on Ranch Road 1053 16. Buena Vista-Crane Farm Road Crossing 17. Girvin Highway, 2 miles east of Girvin 18. Highway 305 crossing Iraan-McCamey Road 19. Highway 51 crossing Rankin-Iraan Road 20. Brooks Ranch 4 miles north of bridge on Highway 290, Ozona-Sheffield highway 21. Highway 290 bridge 22. Hugh Childress Ranch, 14 miles south of Sheffield 23. Mouth of Independence Creek on Chandler Ranch 24. Pandale Crossing 25. Mouth Howard Draw on Al Mills Ranch 8 miles south of Pandale 26. Bud Mills Ranch 4 miles west of Pandale 27. Marty King Ranch 4 miles east of Comstock-Langtry Bridge 28. Marty King Ranch at Comstock-Langtry Bridge 29. Marty King Ranch at mouth of Pecos River Collections From Principle Tributaries Wink Lake at Wink Toyah Creek Springs at base of Timber Mountain 5 miles west of Balmorhea State Park at Balmorhea Lake Balmorhea Comanche Creek Comanche Springs above Lake Leon Crossing of Comanche Creek between Ft. Stockton and Imperial on Highway 1053 Independence Creek Independence Spring 1 mile above Dryden-Sheffield Bridge on Highway 1217 Dryden-Sheffield Bridge on Highway 1217 1 mile below bridge on Highway 1217 --- Page 18 --- 17. Table VI. Netting Collections on the Pecos River and its Tributaries Collection Station Number 23 Location: Mouth of Independence Creek Type of Collection: 3 experimental gill nets Date: March 6, 1958 Species No. % by No. Avg. Wt. % by Wt. Avg. K. Ozs. Longnose gar 6 46.47 66 0.89 Gizzard shad yy bh Wy Blue sucker 5 5.05 50 2.51 Smallmouth buffalo 1 1.01 72 1.85 Channel catfish 1 3,02 33 3-10 Yellow catfish 1 1.01 48 2,12 Black bass 1 1.01 18 3.19 Totals 99 100.00 Collection Station Number 28 a Wiz Location: 1 mile above Highway 90 bridge on Marty King Ranch Type of Collection: 2 experimental gill nets and one 2" net Date: April 9, 1958 Species No. % by No. Avg. Wt. % by Wt. Avg. K. Ozs. Alligator gar 2 5.56 160 9.67 -70 Longnose gar 3 8.33 305 27.74 .28 Gizzard shad 1 2.76 oh 0.73 1.88 River carpsucker 1 2.78 pal 0. 33 2.58 Blue sucker 4 11.11 59 7.16 1.40 Smallmouth buffalo 3 8.33 1h4 8.70 3.08 Yellow catfish 1 2.78 336 10.19 1.90 Rio Grande blue catfish ~ 16 Ye bd 60 29.11 1.59 Channel catfish 3 8.33 Pal 3.73 1.55 Freshwater drum 2 5.56 kh 2.64 2.29 Totals 36 100.00 100.00 Collection Station Number 29 Location: mouth of Pecos River at Rio Grande on Marty King Ranch Type of Collection: 3 experimental gill nets and one 2" net Date: March 6, 1958 Species No % by No. Avg. Wt. % by Wt. Avg. K. Ozs. Alligator gar a 1.64 2h0 7-61 0.80 Longnose gar 4 6.56 28 3.55 0.35 Gizzard shad 1 1.64 2 0.06 2.19 River carpsucker 6 9.83 14 2.67 2.24 Blue sucker 1 1.64 43 1.37 1.41 Rio Grande blue catfish h7 ae 71-05 56 84.07 1.57 Freshwater drum 1 1.64 21 0.67 1.98 Totals 61 100.00 100.00 --- Page 19 --- Collection Station Number 1 18. Table VII. Fish Populations of the Pecos River taken by Seining. Location: Below Red Bluff Dam Type Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Killifishes Tetra Redhorse shiners Parrot minnow Carp Green sunfish Bluegill White bass Totals Collection Station Number 2 August 21, 1955 No. 60 300 8) 20 11.48 57.36 0.00 3.82 2.29 0.38 11.48 11.08 2.11 100.00 * * April 18, 1956 No. 25 200 8 Ef ) 6 52 105 kh 457 Location: mouth of Screwbean Draw, 3 miles below Red Bluff Dam Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Killifishes Redhorse shiners Spottail shiners Parrot minnows Carp Smallmouth buffalo Shad White bass Totals No. 200 180 74 12 18 8 2 14 42. d19 August 21, 1955 38.58 34.68 14.25 2.31. 3.46 1.54 0.38 2.69 2.11 100.00 5.48 43.76 1.75 3.71 0.00 1921 11.38 22.98 9.63 100.00 --- Page 20 --- Table VII. Collection Station Number 3. Location: Pasotex Pipe Line crossing river 6 miles southeast of Orla Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Fundulus Shad Carp White bass Bluegill Green sunfish Totals 19. August 22, 1955 No. 18 32 8 2 2 11 6 19 Collection Station Number 4. Location: Mentone Crossing Bridge on Ranch Road 302 Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Fundulus Parrot minnows Redhorse shiners Tetra Shad White bass Channel cat Green sunfish Bluegill Western longear Totals oo 76 40.50 10.13 2.54 2.54 13.92 7.59 100.00 t * ¥ August 22, 1955 No. 80 46 0 0 2 12 6 (e) 2h 18 6 194 41.24 O3,77 0.00 0.00 1.03 6.19 3.09 0.00 {2.37 9.28 3.09 100.00 Fish Populations of the Pecos River Taken by Seining. (Continued ) April 19, 1956 No. 26 LO 6 6 9 16 9 lie 23.21 35.71 5.36 5.36 8.04 14.28 8.04 100.00 April 19, 1956 No. 68 37 8 2k 9 1 8 3 17 30 fo) 205 33.27 18.04 3.92 11.70 4,39 0.48 3.92 1.46 8.29 14.63 0.00 100.00 --- Page 21 --- Table VII. 20. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 5. Location: Ward County Water District No. 3, Diversion Dam Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Killifishes Spottail shiners Redhorse shiners Shad Carp River carpsuckers Green sunfish Bluegill sunfish White bass Totals August 22, 1955 No. 200 55.41 5 20.78 28 7.75 16 443 11 3.04 2 0.56 2 0.56 18 4.98 9 2.49 ) 0.00 361 100.00 Collection Station Number 6. Location: Ward County Irrigation District No. 1 Type of Equipment Employed: Species Gambusia Killifishes Plains shiners Shad Carp Drum Longnose gar White bass Totals August 22, 1955 No. % 124 47.88 82 31.66 21 8.10 8 3.09 Alar 4.25 fe) 0.00 2 OTT 11 4.25 be °o oO 3° o 259 Re OP yoann — be ON vb S in) 2 April 19, 1956 No. 33.68 31.58 B41 11.58 1.05 3.16 0.00 1.05 TST 8.42 190 100.00 26 ft. bag seine and 12 ft. common seine April 19, 1956 No. 47.62 23.81 3-57 1.19 3-57 2.38 0.60 17.26 Or FaM 100.00 --- Page 22 --- Ply Table VII. Fish Fopulations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 7. Location: Highway bridge 2 miles east of Pecos Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species May 24, 1956 January 8, 1957 No. % No. % Gambusia 68 36.56 74 37.94 Killifishes 32 17.20 48 24.61 Tetra 6 3.22 3 1.53 Redhorse shiners 26 13.98 4 2.06 Plains shiners 2 1.08 fe) 0.00 Carp 11 5.91 4 2.06 River carpsuckers 2 1.08 2 1.03 Drum 2 1.08 1 0.52 Sunfish 28 15.05 37 18.97 White bass 9 4,84 22 11.28 Totals 186 100.00 195 100.00 x € * Collection Station Number 8. Location: Big Valley Ward County District Number 2, Diversion Dam Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine. Species May 31, 1955 May 24, 1956 No. % No. Gambusia 72 48.64 30 19.73 Killifishes 38 25.67 61 40.13 Redhorse shiner 12 S08. 18 11.84 Shad 8 5.42 9 5.93 Bluegill 8 5.42 14 9.21 Green sunfish 5 3.37 11 7.23 White bass 5 3.37 9 5.93 Totals 148 100.00 152 100.00 --- Page 23 --- 22. Table VII. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 9. Location: Stream crossing 15 miles south of Ward Diversion Dam Number 2 Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species May 31, 1955 No. Redhorse shiner 60 68.97 Green sunfish 17 19.54 Bluegill 5 vid Western longear 3 3.45 White bass 2 2.29 Totals 87 100.00 * * * Collection Station Number 10 Location: Pecos County Water District Number 2, 600 ft. below Diversion Dan, 18 stream miles northwest of Grandfalls Crossing Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species May 24, 1956 January 8, 1957 No. % No. Gambusia 29 14.65 16 10.67 Fundulus 60 30.30 80 53.33 Redhorse shiner 38 19.19 8 5.33 Parrot minnows h 2.02 (@) 0.00 River carpsuckers 4 2.02 2 2. 34 Carp 2 1.01 1 0.66 Shad 18 9.09 6 4.00 Longnose gar 2 1.01 2 1.34 Spotted gar 2 1.01 fe) 0.00 Largemouth bass 1 G.51 6) 0.00 White crappie 7 3.54 31 7.33 Bluegill 12 6.06 2 1.34 Green sunfish 9 45k 8 5.33 Western longear 4 2.02 0 0.00 White bass 6 3.03 14 9.33 Totals 198 100.00 150 100.00 --- Page 24 --- 23. Table VII. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 11. Location: Ward County Water District Number 2, > mile above Reeves-Pecos County Line Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species May 24, 1956 January 8, 1957 No. % No. Gambusia 58 43.28 kg 30.44 Killifishes 22 16.42 37 22.98 Redhorse shiners 12 8.95 (0) 0.00 Shad 8 5.98 2 1.24 Drum @) 0.00 2 1.24 Bluegill 21; 15.68 19 11.80 Green sunfish 1 8.20 36 22. 36 White bass 2 1.49 16 9.94 Totals 134 100.00 161 100.00 * & ¥ Collection Station Number 12. Location: Pecos County Water District Number 2, Diversion Dam Number 2 at Royalty Crossing Type of Equipment Employed: 12 ft. common seine Species February 26, 1957 November 19, 1957 No. $ No. % Gambusia 14h 35.82 62 33.51 Killifishes 108 26.86 52 28.11 Redhorse shiners 84 20.89 29 15.68 Plains shiners 20 4.97 ) 0.00 Carp - 0.24 1 0.54 Redhorse suckers 4 0.99 ) 0.00 River carpsuckers 1 0.24 3 1.63 Drum 9) 0.00 al 0.54 Bluegill 38 9.51 16 8.64 White bass 2 0.48 21 11.35 . Totals 4o2 100.00 185 100.00 --- Page 25 --- ak. Table VII. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 13. Location: Grandfalls Crossing Type of Equipment Employed: le ft. common seine Species February 26, 1957 No. Gambusia 112 61.55 Killifishes 22 12.09 Redhorse shiners 10 5.49 Parrot minnows 16 8.79 Redhorse suckers 1) 0.00 Yellow bullheads 0 0.00 Bluegill 20 10.99 White bass 2 1.09 Totals 182 100.00 a a Collection Station Number 14. Location: Pecos County Water District Number 3, Reservoir Type of Equipment Employed: 12 ft. common seine Species February 25, 1957 No. Shad 14 29.16 Carp 12 25.00 White bass 22 45.84 Totals 48 100.00 November 19, 1957 No. 139 55.16 30 11.90 2h 9.52 fe) 0.00 4 1.58 13 5.16 14 5.56 28 11,12 252 100.00 Diversion Dam at Zimmerman November 18, 1957 No. 11 45.83 4 16.66 9 37«51 ek 100.00 --- Page 26 --- Table VII. 2 (Conti Collection Station Number 15. Location: 4 miles above highway bridge on Ranch Read 1053 Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species Gambusia Killifishes Redhorse shiners Spottail shiners Plains shiners Tetra Cichlids Shad Drum Carp Longnose gar Bluegill Green sunfish White crappie White bass Channel catfish Totals 5. nued ) May 24, 1956 No. 63 18.36 112 32.65 38 11.07 2 0.59 6 Le 7 14 4.08 2 0.59 13 3-79 2 0.59 12 3.49 ) 0.00 28 is ee TT@) 11.67 9) 0.00 Yi 3.21 0 9.00 343 100.00 * * € Collection Station Number 16. Location: Buena Vista-Crane Farm Road Crossing Type of Equipment Employed: Species Gambusia Killifishes Spottail shiners Parrot minnows Shad Bluegill Green sunfish White crappie White bass Totals 26 ft. bag seine and 12 ft. common seine February 27, No. 136 38 2k 16 28 19 21 2 6 290 1 1957 ig 46.89 13.10 8.29 5.52 MO ONO QBRG HR 8 8 Fish Populations of the Pecos River Taken by Seining. November 18, 1957 No. 48 ho ho Me bp FFP OANMOPODFFOO 1TT No. MT 30 2 14 3 16 9 2 2 125 27.11 22.59 0.00 0.00 2.27 11.89 3.38 0.00 0.56 10.16 1.12 9.03 6.23 a Wea a7 2.27 100.00 November 25, aa 37.60 24.00 1.60 11.20 2.40 12.80 7.20 1.60 1.60 100 .00 --- Page 27 --- Table VII. 26. Fish Populations of the Pecos River Taken by Seining. Collection Station Number 17. Location: Highway bridge 2 miles east of Girvin Type of Equipment Employed: Species Killifishes Tetra Shad Totals 12 ft. (Continued ) common seine November 19, 1957 No. 30 2 8 Te) Collection Station Number 18. Location: Highway 305 crossing on Type of Equipment Employed: Species Gambusia Killifishes Redhorse shiners Plains shiners Parrot minnows Shad Carp River carpsuckers Green sunfish White crappie White bass Totals 75-00 5.00 20.00 100.00 Iraan-McCamey Road May 30, 1955 No. 48 33.10 16 11.03 21 14.49 16 11.05 14 9.65 3 2.06 9 6.23 4 2.75 13: 7.58 1 0.69 2 1.37 145 100.00 26 ft. bag seine and 12 ft. common seine April 5, 1957 No. 129 22.48 29.46 9.31 0.00 4.65 0.00 3.10 6.96 5.42 9.31 9.31 100.00 --- Page 28 --- 2U Table VII. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 19. Location: Highway 51 crossing on Rankin-McCamey Road Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species May 30, 1955 April 5, 1957 No. % No. Gambusia 200 72.46 150 63.29 Killifishes 46 16.66 4O 16.87 Redhorse shiners 8 2.89 ) 0.00 Parrot minnows 2 0.72 6 2:53 Plains minnows 0 0.00 4 1.68 Shad fe) 0.00 4 1.68 Drum 2 0.72 6 2.53 Green sunfish 16 5.83 21 8.86 Largemouth bass 2 0.72 2 0.88 White bass fo) 0.00 4 1.68 Totals 276 100.00 O37 100.00 x * * Collection Station Number 20. ra Location: Brooks Ranch 4 miles north of bridge on Highway 290, Ozona-Sheffield Highway Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species No. % No. % Gambusia 120 41.37 76 36.01 Killifishes 64, 22.06 80 37-91 Shad 10 3.44 ho 1.89 Longnose gar 28 9.72 3 1.43 Spotted gar 6 2.06 ) 0.00 Bluegill sunfish 2k 8.27 16 7.58 Green sunfish 18 6.20 14 6.63 Western longear 8 2.75 2 0.96 Largemouth bass _~ 2 0.69 1 0.48 White crappie 2 0.69 T 3.31 White bass — 8 2.75 6 2.84 Channel catfish fe) 0.00 2 0.96 Totals 290 100.00 211 100.00 --- Page 29 --- 28. Table VII. Fish Populations of the Pecos River Taken by Seining. (Continued) Collection Station Number 21. Location: Highway 290, Ozona-Sheffield Highway Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine Species No. % No. % Gambusia 120 46.33 64 43,8) Killifishes 80 30.88 16 10.95 Redhorse shiners 18 6.94 1}. 7.63 Parrot minnows 6 2.32 8 5.48 Shad 9 3.48 2 1.36 Longnose gar 2 0.78 (e) 0.00 Carp 1 0.39 6 4,12 Redhorse suckers 3 1.16 fe) 0.00 Sunfish 16 6.18 21 14.38 White bass 4 ¢ 1.54 18 12.24 Totals 259 100.00 146 100.00 %* % ¥ Collection Station Number 22, / Location: Hugh Childress Ranch 14 miles south of Sheffield Type of Equipment Employed: 12 ft. common seine Species No. % Gambusia 124 4.77 Killifishes 60 21.66 Redhorse shiners 18 6.49 Dionda 28 10.10 Carp 4 1.44 Redhorse suckers 6 2.16 River carpsuckers 4 1.44 Shad 13 4.69 Longnose gar 2 0.73 Largemouth bass 2 — OxT3 Sunfish 16 5.79 Totals 2TT 100.00 --- Page 30 --- Table VII. 29. (Continued ) Collection Station Number 23. Location: Independence Creek bridge Highway 349 Type of Equipment Used: 26 ft. bag seine and 12 Species No. % Ganbusia 2k 5.38 Killifishes 60 13.45 Redhorse shiners 4 0.89 Dionda 300 67.33 Stone rollers 3 0.67 Tetra 6 1.34 Cichlids 8 1.79 Green sunfish 27 6.05 Bluegill 3 0.67 Redear sunfish 2 0.44 Western longear sunfish 2 0.44 Yellowbelly sunfish 1 0.22 Largemouth bass \ 0.89 White crappie 2 0.44 Totals LLG 100.00 HX Collection Station Number 23a. Location: Mouth of Independence Creek Type of Equipment Employed: 26 ft. bag seine Species No. % Dionda 200 90.49 Green sunfish 16 7.23 Largemouth bass 5 2.28 Totals 221 100.00 ft. common seine No. 18 21 6 250 2 18 9 33 16 oO OW OO 390 160 38 11 209 Fish Populations of the Pecos River Taken by Seining. 4.61 5.38 1.53 64.10 0.53 4.61 2.32 8.46 4.11 0.00 2.05 0.77 1.53 0.00 100.00 76.55 18.18 2-27 100.00 --- Page 31 --- Table VII. 30. Fish Populations of the Pecos River Taken by Seining. (Continued ) Collection Station Number 24. Location: Pandale Crossing ~~ Type of Equipment Employed: Species Dionda Plains shiners Parrot minnows Tetra Cichlids Green sunfishes Bluegill Western longear Largemouth bass Totals No. % 200 69.45 30 10.42 12 4.17 16 5-59 2 0.69 12 4.17 12 4.17 2 0.69 2 0.69 288 100.00 * * ¥ Collection Station Number 25. Location: Mouth of Howards Draw on Al Mills Ranch 8 miles south of Pandale Type Equipment Employed: Species Gambusia Killifishes Plains shiners Dionda Shad Green sunfish Bluegill Western longear Largemouth bass Channel catfish Yellow bullheads Totals April 17, 1957 No. 111 29.67 39 10.42 8 2.13 140 37.43 3 0.80 16 4.26 36 9.62 2 0.60 6 1.60 fe) 0.00 13 3.47 374 100.00 26 ft. bag seine and 12 ft. common seine No. % 130 70.65 14.67 0.55 4.35 3.26 3.80 a § 0.00 0.55 ho HOFFA AMPA 184 100.00 / 26 ft. bag seine and 12 ft. common seine March 6, 1958 No. 80 19.23 62 14.91 16 3.84 201 48,31 2 0.49 28 6.73 6 1. 4d 9) 0.00 2 0.49 12 2.68 7 1.68 416 100.00 --- Page 32 --- 31. Table VII. Fish Populations of the Pecos River Taken by Seining (Continued ) Collection Station Number 26. Location; Bud Mills Ranch 4 miles west of Pandale Type of Equipment Employed: Species March 6, 1958 No. Gambusia 16 5.89 Killifishes 22 8.08 Campostoma 14 5.14 Dionda 160 58.8h Green sunfish 28 10.29 Western longear 12 44D Redear sunfish 12 YL Tetra 6 2.21 Chiclids 2 0.73 Totals 272 100,00 Collection Station Number 27. Location: Marty King Ranch 4 miles east of Comstock-Langtry Bridge Type of Equipment Employed: 26 ft. bag seine and 12 ft. common seine 26 ft. bag seine and 12 ft. common seine Species March 6, 1…