USGS Water-Year Summary for Site 08093360

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	Available Parameters
	00060 Discharge(Max.,Min.,Mean)
	00065 Gage height(Max.,Min.,Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

08093360 Aquilla Creek above Aquilla, TX

LOCATION - Lat 31°53'43", long 97°12'10" referenced to North American Datum of 1927, Hill County, TX, Hydrologic Unit 12060202, on right bank of excavated outlet channel, 0.2 mi downstream from Aquilla Dam on Aquilla Creek and Farm Road 310 (on top of Aquilla Dam), and 3.3 mi north-northeast of Aquilla.

DRAINAGE AREA - 255 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Oct. 1979 to Mar. 1982 (daily mean discharge), Apr. 1982 to Sept. 1992 (low-flow only), May 2001 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Oct. 1979 to Apr. 1983, Feb. 2004 to Aug. 2005. BIOCHEMICAL DATA: Oct. 1979 to Apr. 1983, Feb. 2004 to Aug. 2005. BIOLOGICAL DATA: June 1981. PESTICIDE DATA: Oct. 1979 to Sept. 1980. RADIOCHEMICAL DATA: Feb. to July 1981, Feb. 2004 to Aug. 2005.

GAGE - Water-stage recorder and concrete weir with sharp-crested, 90 degree v-notch weir section for low flows. Datum of gage is 478.71 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers), 479.15 ft above NAVD of 1988. Prior to Mar. 15, 1982, at site 0.2 mi downstream at same datum. Satellite telemeter at station.

REMARKS - Some records listed in the "Period of Record" for surface water and water quality may not be available electronically. Since Apr. 1983, flow has been completely regulated. No flow at times.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug. 31, 1887, reached a stage of 35 ft, from information by local resident. Flood of Sept. 27, 1936, reached a stage of 34 ft from floodmark at downstream site and adjusted to gage site (Discharge not determined for either peak).

EXTREMES FOR PERIOD PRIOR TO REGULATION - WATER YEARS, 1980-1982: Maximum discharge, 7,100 ft³/s, June 16, 1981, gage height, 26.98 ft; no flow many days.

AVERAGE DISCHARGE FOR PERIOD PRIOR TO REGULATION - 3 years (water years 1980-82) 41.3 ft³/s, 29,920 acre-ft/yr.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Oct. 1979 to Apr. 1983 and Feb. 2004 to Aug. 2005. BIOCHEMICAL DATA: Oct. 1979 to Apr. 1983 and Feb. 2004 to Aug. 2005. RADIOCHEMICAL DATA: Feb. 1981 to July 1981.