USGS Water-Year Summary 2023

441520088045001 GLRI EAST RIVER WATERWAY 3 NEAR GREENLEAF, WI

LOCATION - Lat 44°15'20.5", long 88°04'49.9" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SE 1/4 sec.28, T.21 N., R.20 E., Brown County, WI, Hydrologic Unit 04030204,

DRAINAGE AREA - 0.02 mi², 10.2 acres

SURFACE-WATER RECORDS

PERIOD OF RECORD - 03/11/2014 to present.

GAGE - Water-stage recorder. Water levels are controlled by 2.5 ft H flume. Elevation of gage is XXX.

REMARKS - Records are good, except for estimated days which are poor. Note that discharge is the daily sum, in cubic feet.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - March 11, 2014 to present.

INSTRUMENTATION - Tipping bucket rain gage with electronic datalogger.

EXTREMES FOR PERIOD OF RECORD - Maximum daily rainfall, 1.79in., August 11, 2014

REMARKS - WY 14 Calibrations were made on 07/24/2014. A Nova-Lynx rain gage calibrator (946 ml) with the smallest nozzle size was used to determine accuracy of the rain gage. Calibration takes approximately 40 minutes, with an expected rainfall amount of 1.14”, for an average rate of 1.7” per hour. The 07/24/2014 calibration yielded 1.20” (5% high), no data corrections were made. All calibrations were removed from the precipitation record. Snowfall/ice that melts in the funnel is interpreted as snowmelt and is removed from the record and shown as estimated days. Those days interpreted as snowmelt include Mar 11, 19 and 28. During installation of the gage on 3/11/13, approximately 2” of precipitation was falsely recorded. This data was removed from the record. A rain event occurring 05/19/2014 – 05/20/2014 was missed due to power failure. Daily precipitation values for this event were estimated using data from GLRI Waterway Sites 1 and 2. Data was missing between 9/24/14 and 9/26/14 due to a data logger malfunction, daily values (0.00) were estimated using data from GLRI Waterway Sites 1 and 2. WY 15 Calibrations were made on 12/19/2014 and 8/25/2015. A Nova-Lynx rain gage calibrator (946 ml) with the smallest nozzle size was used to determine accuracy of the rain gage. Calibration takes approximately 40 minutes, with an expected rainfall amount of 1.14”, for an average rate of 1.7” per hour. The 12/19/2014 calibration yielded 1.14”, and the 8/25/2015 calibration yielded 1.15” (<1% high), no data corrections were made. All calibrations were removed from the precipitation record. Snowfall/ice that melts in the funnel is interpreted as snowmelt and is removed from the record and shown as estimated days. Those days interpreted as snowmelt include Nov 29, Jan 3 and 29.

WATER-QUALITY RECORDS

PERIOD OF RECORD - March 11, 2014 to current year

INSTRUMENTATION - Water-quality sampler since March 11, 2014.

REMARKS - Chemical analyses by the Water and Environmental Analysis Lab at the University of Wisconsin-Stevens Point. Samples with end dates/times are flow-composite samples collected by an automatic point sampler which represent the event-mean concentration for the specified runoff period. Samples with only start dates/times are discrete samples collected by the same sampler. The sample runoff volume is the total flow that occurs between the start and end time of each flow-composite sample. In most cases, the sample runoff volume is slightly less than the total storm runoff volume. Some runoff events were not sampled. An approximate storm load (in pounds) can be computed by multiplying the sample runoff volume (in cubic feet) by the constituent concentration (in mg/L) and a factor of 6.2428x10^-5.