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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
15226000 SOLOMON GULCH NEAR VALDEZ, AK
LOCATION - Lat 61°05'02", long 146°18'13" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 SW 1/4 sec.16, T.9 S., R.6 W., Valdez-Cordova Division, AK, Hydrologic Unit 19020201, (Valdez A-7 SE quad), below confluence of Solomon Gulch Tailrace and Falls Creek, and 3.8 mi southeast across Port Valdez from Valdez.
DRAINAGE AREA - 19.2 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - July to December 1948, October 1949 to September 1956, and September 1986 to September 2021, discontinued.
GAGE - Nonrecording gage. Elevation of gage is at sea level. July 9, 1948 to May 21, 1950, nonrecording gage, and May 22, 1950 to September 30, 1956, water-stage recorder at about present site and datum.
COOPERATION - Records of daily discharge diverted to the fish hatchery are furnished by Valdez Fisheries Development Association. Copper Valley Electric Association provides tables of hourly power output through the turbines and daily storage values for Solomon Lake (USGS 15225990).
REMARKS - Discharge data represent the flow at mouth, which includes Solomon Gulch at Top of Falls (USGS 15225997), hydroelectric plant Tailrace (USGS 15225996), and Valdez Fisheries Development Association fish hatchery diversions. Water for power generation is pulled from Solomon Lake (USGS 15225990), impounded 0.8 mi upstream. Water is diverted to the fish hatchery by a 24-inch penstock aeration system, and a 42-inch penstock line from the Tailrace weir pool; an unaerated penstock and an 8-inch pipe for warm water supply are also upstream. Additional water is diverted to the fish hatchery from Solomon Gulch bypass channel, about 750 ft above Solomon Gulch mouth, by means of a 12-inch diameter pipe. The fish hatchery discharges water directly into Port Valdez.
Power generation began January 6, 1982.
