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Table 2. Various aspects of Green River hydrology /thermal regimes and associated observations on habitat availability, relative reproductive and recruitment success of Gila spp., Colorado pikeminnow, and other selected species from Desolation and Gray Canyons; 1992 - 1996 1992 1993 1994 1995 1996 Peak Flow' 11,000 25,400 11,800 29,800 24,000 Date of Peak 14 May 31 May 21 May 18 June 22 May ~ Peak Duration 37 Days 68 Days 34 Days 87 Days 90 Days ~ O J (Days>6000cfs) 04 May-O6 June 02 May - 09 July 12 May - 14 June OS May - OI Aug 08 April - 07 July ~ Summer Avg Flow ~ /Temp (15 June - 31 2278 cfs / 24.5°C 5740 cfs / 23.5°C 1927cfs / 12763 cfs / 5808 cfs / 24.7°C = Aug) 26.1 °C 22.9°C Overwinter Avg Flow/Temp (15 Nov - 1851 cf's /1.85°C 3339 cfs / 1.90°C 2293 cfs / 2.61 °C 4222 cfs / 2.65°C 3922 cfs / 1.48°C 01 Mar) Shoreline in eddy @ 23.25 24.0 23.25 24.0 26.8 ~ Q peak- large eddies large eddies large eddies large eddies large eddies m % Shoreline in eddy 25.0 27.25 24.25 23.25 27.25 _ during summer flow' small eddies sm / lg eddies small eddies large eddies sm / lg eddies No. of BW in August' - - 69 56 88 YOY chub abundance'•" low hi hi extremely to med. YOY chub summer low low hi exrremely to med. grOWth 3.4 YOY chub overwinter survival (OWS) ° low hi med low - } ~ YOY pikeminnow abund.'•4 low hi med. low hi p YOY pikeminnow U OWS° low med. hi low S LL Channel eattish OWS° med. low hi hi hi Flannelmouth sucker low med. med. low OWS' YQY NNC abund. ° med, low hi low (Ig numbers low of `94 cohort collected) ' all flow and temperature data was recorded by the USGS at Gage Station no.09315000 2 as reported in, or interpreted from data reported in. Orchard and Schmidt (1998) -see Report A this volume 3 as reported in Day et al. (1999) -see Report B 4 as reported in Chart and Lentsch (1998) -see Report C lx