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Water-Year Summary for Site 03337100

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 40°06'41", long 88°13'10" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NE 1/4 sec.18, T.19 N., R.9 E., Champaign County, IL, Hydrologic Unit 05120109, on left bank 17 ft. upstream from Lincoln Ave. at Urbana, and at mile 1.3.
DRAINAGE AREA - 4.78 mi².
  DISCHARGE: December 2001 to current year.
  STAGE: December 2001 to current year.
GAGE - Water-stage recorder, phone telemeter and crest-stage gage. Datum of gage is 694.00 ft. above NGVD of 1929 (693.88 ft NAVD 1988).
REMARKS - Since Aug. 1, 1960, storm runoff from 1.12 sq. mi. at the headwaters has been diverted to Saline Branch through the Northwest Diversion Conduit. Prior to the 1970s, the Urbana and Champaign Sanitary District discharged treated runoff and sanitary sewer water about 0.5 mi. upstream from the gage. Since 1981, the Oak-Ash detention 1.7 mi. upstream stores 59 ac-ft of runoff with a controlled release of 15 ft³/s up to a maximum in-stream rate of 100 ft³/s. Since 1991, the Eureka-Elm Detention 2.4 mi. upstream stores 14.6 ac-ft of runoff. Since July 1999, the Healey Street detention 1.0 mi. upstream temporarily detains 114 ac-ft of runoff. Water enters the basin by gravity flow during periods of heavy runoff, and is pumped out during the recession, with a maximum rate of 20 ft³/s not to exceed a maximum in-stream rate of 60 ft³/s. Since Oct. 1999, some temporary storage began in underground conduits (Campustown inline storage) 0.6 mi upstream during runoff events. Channel construction near the gage began Aug. 30, 2001. Streamflow diversion pumpage for channel construction began Sept. 1, 2001 causing frequent fluctuations in stage. Channel construction and pumpage for channel construction ended May 6, 2003. Since December 2010, the Second Street detention 0.9 mi. upstream stores 41.5 ac-ft of runoff. Flood flows are initially routed to storm sewers, then are split between the storm sewer and Boneyard Creek. Construction on this detention began September 2008. Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge 982 ft³/s, Aug. 27, 2009, gage height, 18.44 ft; minimum, 0.01 ft³/s, Nov. 12, 2002, due to water diversion for channel construction.