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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
403835112171801 MILL SPRING NEAR ERDA, UT
LOCATION - Lat 40°38'35", long 112°17'18" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 SW 1/4 sec.15, T.2 S., R.4 W., Tooele County, UT, Hydrologic Unit 16020304,
DRAINAGE AREA - Not determined.
REVISIONS HISTORY - WDR UT-05-1: 2003,2004. Prior to August 17, 2023 the elevation of the gage was 4,300 ft above NGVD of 1929 from a topographic map.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 2000 to current year.
GAGE - Water-stage recorder only until May 8, 2007. Water-stage recorder and acoustic velocity meter since May 8, 2007. Datum of gage is 4,261.34 ft. above NAVD of 1988 from a Level III GNSS survey conducted on August 17, 2023.
REMARKS - Multiple points of diversion for irrigation upstream of gage. At times there is no flow or nearly no flow at gage due to diversions. Records are fair except for estimated daily discharges and periods when flow is diverted, which are poor, and other periods as noted. 10/1/2013 to 5/22/2014; rated poor.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 16.0 ft³/s, Jul 17, 2002; minimum daily discharge, 0.07 ft³/s, Nov 7, 2012.
