Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
08073000 Addicks Reservoir near Addicks, TX
LOCATION - Lat 29°47'28", long 95°37'24" referenced to North American Datum of 1927, Harris County, TX, Hydrologic Unit 12040104, on left bank at dam on South Mayde Creek, 65 ft upstream from reservoir outlet works, 2,700 ft upstream from U.S. Highway 90 and Interstate Highway 10, 1.2 mi east of Addicks, and 1.4 mi upstream from mouth. Stilling well shelter abandoned after Hurricane Harvey and new shelter ( 2 X 2.5 X5 ft metal enclosure) sits atop the southwest corner of grated platform above the dam's outflow gates. New conduit run to radar and orifice in 2018 WY.
DRAINAGE AREA - 136 mi².
REVISIONS HISTORY - WDR TX-77-2: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1948 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: June 1978 to Sept. 1981.
BIOCHEMICAL DATA: June 1978 to Sept. 1981.
GAGE - Water-stage recorder. Datum of gage is NGVD 1988, 2001 adjustment. Prior to Oct. 1, 2008, datum of gage was NGVD of 1929, 1973 adjustment; unadjusted for land-surface subsidence since 1973 (3.12 ft above current datum). Prior to Oct. 1, 1980, datum of gage was unadjusted for land-surface subsidence that occurred prior to that date. Satellite telemeter at station.
COOPERATION - The capacity table, furnished by the U.S. Army Corps of Engineers, was based on extensive releveling survey in 1974, using NGVD of 1929, 1973 adjustment. Values converted to NAVD 1988, 2001 adjustment.
REMARKS - Some records listed in the "Period of Record" for surface water and water quality may not be available electronically. The reservoir is formed by a rolled earthfill dam 61,166 ft long. The dam was completed in Dec. 1948. The reservoir is operated for flood protection for the city of Houston. The outlet works consist of five concrete conduits 8 x 6 ft wide, each controlled by a vertical slide gate. Runoff in excess of maximum design capacity will be discharged around both ends of dam. Data regarding the dam are given in the following table:
Elevation (feet) Top of dam............................................................ 121.0 Design flood.......................................................... 115.0 Ground elevation at ends of dam....................................... 108.0 Crest of spillway (invert)............................................ 67.5
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in Dec. 1935 reached a stage of 89.9 ft, former datum, at bridge on U.S. Highway 90, 2,700 ft downstream from gage, from information by the U.S. Army Corps of Engineers.
