USGS Water-Year Summary 2024
09330500 MUDDY CREEK NEAR EMERY, UT
LOCATION - Lat 38°59'27.8", long 111°15'13.99" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NE 1/4 sec.21, T.21 S., R.6 E., Emery County, UT, Hydrologic Unit 14070002, on left bank 0.7 mi upstream from Emery Canal.
DRAINAGE AREA - 105 mi².
REVISIONS HISTORY - WSP 1633: Drainage area. Prior to Jan 26, 2022, the datum of the gage was 6,400 ft. above NGVD of 1929 from a topographic map.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April to July 1909, July 1910 to July 1914, June 1949 to current year.
GAGE - Water-stage recorder. Datum of gage is 6,505.49 ft. above NAVD of 1988 from a Level II GNSS survey conducted on Sep 23, 2019. April 29 to July 31, 1909, reference point. July 23, 1910 to July 16, 1914, staff gages, at sites about 1 mi upstream at different datums. June 29, 1949 to Nov 12, 2009 at different datum 600 ft downstream of current location and 100 ft upstream of past location of head of Emery Canal. Nov 12, 2009 to Apr 8, 2010 at different datum 200 ft upstream of past location of head of Emery Canal, from Nov 19,2013 to present time at present datum .9 miles upstream of the emery canal.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,520 ft³/s, Aug 7, 2008, gage height, 12.16 ft, from slope area measurement at different datum; no flow Apr 13-16, 1911.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water temperature and specific conductance from May 12, 2015 to Oct 6, 2016.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Minimum recorded; 2.4°C, May 12, 2015; Maximum recorded, 22.1°C, Jul 27, 2016. SPECIFIC CONDUCTANCE: Maximum recorded, 2,470 microsiemens/cm, Aug 3, 2016; minimum recorded, 331 microsiemens/cm, Jul 15, 2016.