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Water-Year Summary for Site 06604200

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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
00010 Temperature, water(Mean)  
00065 Gage height(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
06604200 West Okoboji Lake at Lakeside Laboratory near Milford, IA
LOCATION - Lat 43°22'42.3", long 95°10'52.4" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 SW 1/4 sec.23, T.99 N., R.37 W., Dickinson County, IA, Hydrologic Unit 10230003, at pumping station of Lakeside Laboratory on west shore, 2.3 mi upstream from lake outlet, and 3.8 mi northwest of Milford.
DRAINAGE AREA - 125 mi².
REVISIONS HISTORY - Revisions: Gage datum was updated to 1,391.65 ft NAVD88 on July 27, 2023, as determined by a GNSS Level II survey. Gage datum was previously published as 1,391.76 ft NGVD29.
 
SURFACE-WATER RECORDS
PERIOD OF RECORD - Stage-only records from May 1933 to current year, records fragmentary for some periods. Prior to October 1937, published as "Okoboji Lake at Arnold's Park". October 1937 to September 1966, published as "Okoboji Lake at Lakeside Laboratory near Milford".
GAGE - Water-stage recorder. Datum of gage is 1,391.65 ft above North American Vertical Datum of 1988 and 94.51 ft above Iowa Lake Survey datum. Prior to June 17, 1938, non-recording gage at State Pier at Arnolds Park at same datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IA Water Science Center. Lake formed by concrete dam with ungated spillway at elevation 1,395.8 ft above National Geodetic Vertical Datum of 1929. Lake is used for conservation and recreation. Area of lake is approximately 3,900 acres.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: October 2011 to October 2023, records fragmentary.