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e ! o <br />a <br />FROM 1930 To 1950 INCLUSIVE, THE ANNUAL D13CHARGE OF THE GILA RIVEN AT THE <br />WATER GAGE NEAR GILA, NEW MEx1co WAS MEASURED AND RECOPDED BY THE Uo S. DEPARTMENT <br />OF INTERIOR, GEOLOGICAL SURVEY. (FIG. 3) THE DRAINAGE ABOVE THIS PARTICULAR <br />STATION ON THE GILA RIVER COVERS AN AREA OF ABOUT 1x870 SQUARE MILES. FRom TH1: <br />GRAPH ON THE FLOW Of THE GILA RIVER9 FOUR PEAK TEARS CAN BE 106OTx33: 1932 - 190" <br />SECOND FEET, 1937 - 220 SECOND FEET9 1941 - 37.8 gEcOND FEET, AND 1949 ® X60 SECOND <br />FEET. PROBABLY THE MOST SIGNIFICANT PART OF THE GRAPH 08 THE EVIDENCE OF A DONINe <br />WARD TREND DURING THE 21 YEARS. <br />THE NIa8RE8 RIVER DRAINAGE COVERS AN AREA OF 183 SQUARE MILES. RECORDS WERE <br />NOT COMPLETE ENOUGH TO GET AN-OVER-ALL'PICTURE OF NEATER FLOW,) BUT THE 29 YEAR <br />AVERAGE FOR THE STATION ON THE N SABRE, RIVER NEAR BEAR CANYON WAS 11.5 CNIr;S+1I:' FEET <br />PER SECOND, <br />THE AVERAGE MEAN TEMPERATURE FOR THE SILVER CITY AREA9 WHICH 13 LOCATED 1N. <br />THE UPPER SONORAN ZONE ON THE MIMBRES DRAINAGE9 WAS 57o4 DEGREES Fo 9N 1934. THIS <br />AVERAGE WAS ABOUT 3.9 DEGREES Fo ABOVE THE LONG TIME AVERAGE FOR THIS AREA. <br />PREVIOUS PLANTINGS OF FISH IN THE GILA DRAIM;GE9 NEW MEXICO, CONSISTED OF VARIOUS <br />SPECIES OF TROUT AND WARM WATER FISHES. THOSE SPECIES PLANTED IN THE GiLA-DRAINAGE <br />SIMCL 1901 WERE: BLACK SPOTTED TROUT9 CATFISH, BROOK TROUT, BLACK BASS, STEELwEAD <br />SALMON, RAINBOW TROUT, LOCH LEVEN TROUT, SMALLMOUTH BLACK BASS, BULLHEAD9 AAD-BAEAY.* <br />IN THE MIMBREs RIVER, PREVIOUS PLANTINGS CONSISTED OF BLACK SPOTTED TROUTS BROOK eTROUT, <br />SeW1SH, RAINBOW TROUT, AND NATIVES.** THE SPECIES OF FISH NOW FOUND IN THESE DRAIN_ <br />AGES ARE LISTED 1M- TABLE 2. <br />IN 19239 A TROUT HATCHERY WAS BUILT ON THE WEST FORK OF THE GILA RIVER AT ITS' <br />JUNCT 1 ON WITH WH 1 TE CREEK.,, PRESENTLY THE SITE Of THE. iWH 1 TE, CREEK RANGER< STATION' <br />IM 1935, THIS wATCNERY° WAS mumoNED.9 DUE TO ITS- I NACCESS'I B`5 L 1 TY o <br />ACCORDING TO LOCAL RESIDENTS, TROUT WERE FORMERLY FOUND IN THE GILA RIVER AS'-FAR, <br />DOWN AS THE UPPER-, END: OF THE BOX NEAR RED ROCK, NEW MEXIco, BUT OLIMAT10 CHANGEB=AND- <br />OTHER FACTORS HAVE WARMED THE MATERS OF THE GILA TO THE POINT WHERE IT 13 NOW A MORE. <br />SUITABLE HABITAT FOR SUCKERS AND WARM WATERS SPECIES OF GAME FISH. <br />METHODS AND MATERIALS <br />FI'JM POPULATIONS OR STREAMS WERE SAMPLED 9Y'THE ELECTROmSHOCKIN6 METHOD. THE <br />9A01111 NE USED I M TH 18 SURVEY WAS A L I GHT- WE 1 GMT, 110 VOL T, A. C. MODEL W-1 TH Al OUTPUT <br />or 4W WATTS. (F 1 Go 4) <br />A METHOD WAS DEVISED FOR PACKING THE 9HOCKER9 50 FEET OF ELECTRICAL 0-0I09 COLLAP- <br />SIBLE ELECTRODES9 SEINE,, DIP NETS, WADERS, NOTESOOK39 RULLER-AND-SCALE, GASOLINN9 <br />WTTOAA SAMPLER 30 COLLECTION JARS WITH FORMAL I N, AND 3PARE PARTS AND TOOLS 0* ONE- <br />PACK ANIMALe tF1G. 5) THIS WAS DOME TO FACILITATE THE SURVEY Or STREAMS IN THE IN- <br />ACCESSIBLE AREAS9 WHICH CONSTITUTE A LARGE PROPORTION OF THOSE WATERS IN 7RE TWOS <br />DRAINAGES INCLUDED IN TH13 SURVEY. <br />IN SAMPLING F13H POPULATIONS9 STATIONS WERE CHOIjEM TO GET REPRESENTATIVE SECT-IONS <br />OF THE STREAMS. A MEASURED AREA WAS THEN SHOCKED AND ALL F i SN' POSSIBLE WERE RECOVERED C <br />A SEINE OR NET WAS USED WHEN NEEDED9 AS A BLOCK AT ONE END OF THE SECTION SAMPLED <br />* AND ** NAMES OF FISHES ARE !'HOSE L I STEM j N OLD PLANTING RECORDS.