TPWD 1954 F-5-R-1 #55: Segment Completion Report: Analysis of Fisheries Problems in Texas Waters

STATE Texas PROJECT ‘30 9 F -= [3 ~32? m l , Jig“; Dal , l PEREOD June 22} 19s? m Jane 22, Segment Completinn Report Lawrence Gamphell TITLE OBdECTIVES Analysis of data to determine specific fisheries problems in the concerned waters. PR’GEDURE Te determine by careful perusal of field collected data the specific fisheries problems ehhh will require additienal investigations or experimental methods of reso» lutien. FINDENG investigation thus far has revealed three conditions that are probably resulting in f*sherp problemsa In streams surveyed} as described in the Csmpletion Reports for Jabs Ami} AwE, Em? and Bus, radical flucnation in stream flow and a lake of permanent i‘“'l-*-- t n sal ed i intermittent murky or silty peels whose chemical and physical properties apparm ltly fever the reproductisn of obnoxious species. This condition is primarily a result at denudemmnt of mesh of the upper watersheds by abusive land practices and by the extenw‘ site as a as of suhwsurface water for irrigatioaal purposesa Soil erosion and the seassnal peels for irrigation usually greatly reduces peel volumes. This actioa eften secure during or immediately following spawning seasons for game species“ The overorewdm ing that results from this reduction of the living space apparently favors the propagau List at genesisus fishes sad the elimination sf game species. Carp are known tn reproe muse successfully under these cenditionso 1.1 E Lakes Nasserthy and Brewnwood are Often snbfiected ts an extreme bimanneal lake level flnstuatieh resulting free the water demand free those reserveirs. At sash times spawning failures by same ofthe mere popular game species, notably largemouth hlaeh bass have escnrreda In Oak Creek Reservoir? inereases is yellee'bnllheads may indicate that those-fish 'wiil become a future fishery prehlemfl SUMMARY l. Chemieal and physical eonditiens sf peels usually making up much of the watersheds surveyed apparently favor sueeessful prepagatien sf ohnexious species and the elimination of game species” ‘. Bimaenual flactuatiens of Lake Nasserthy and Lake Brewnwood oecasienally result is spawning failures by some game species. D.) Je Yellow bullheads may become a fishery problem in Oak Creek Reservoir.