USGS Water-Year Summary 2023
05432695 RIDGEWAY BRANCH NEAR HOLLANDALE, WI
LOCATION - Lat 42°56'26", long 89°55'16" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 sec.5, T.5 N., R.5 E., Iowa County, WI, Hydrologic Unit 07090003, on right bank 200 ft upstream of CTH K bridge, 4.8 miles north of village of Hollandale.
DRAINAGE AREA - 19 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2006 to current year.
GAGE - Water-stage recorder and crest-stage-gage. Datum of gage is 895 ft above NGVD of 1929, from topographic map.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - October 2006 to current year.
INSTRUMENTATION - Tipping bucket rain gage with electronic data logger.
EXTREMES FOR PERIOD OF RECORD - Maximum daily rainfall, 6.42 in., Aug. 5, 2007.
WATER-QUALITY RECORDS
PERIOD OF RECORD - October 2006 to current year.
PERIOD OF DAILY RECORD - SUSPENDED SEDIMENT DISCHARGE: October 2006 to current year.
TOTAL PHOSPHORUS DISCHARGE: October 2006 to current year.
DISSOLVED PHOSPHORUS DISCHARGE: October 2009 to current year.
INSTRUMENTATION - Stage-activated water-quality sampler since October 2006.
EXTREMES FOR PERIOD OF RECORD - SUSPENDED SEDIMENT DISCHARGE: Maximum daily, 1410 ton, Jun. 22, 2013; minimum daily, 0.03 ton, Oct. 1, 4-20, 2007, Oct. 1-11, 2012.
TOTAL-PHOSPHORUS DISCHARGE: Maximum daily, 2430 lb, Apr. 25, 2008; minimum daily, 0.37 lb, May 22, 2007.