USGS Water-Year Summary 2023

450456092225801 DISCOVERY FARMS-WILLOW WATERWAY 1 NEAR CYLON, WI

LOCATION - Lat 45°04'55.8", long 92°22'58.3" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 sec.13, T.30 N., R.17 W., St. Croix County, WI, Hydrologic Unit 07030005,

DRAINAGE AREA - 0.07 mi², 42.1 acres, from LIDAR.

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 2010 to September 2015.

GAGE - Water-stage recorder. Water levels are controlled by 2.5 ft H flume.

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

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - November 2010 to September 2015.

INSTRUMENTATION - Tipping bucket rain gage with electronic datalogger. This location is somewhat unique in that the rain gage and station are located beneath a large center-pivot irrigation system. Rainfall interpreted as irrigation was removed from the record.

EXTREMES FOR PERIOD OF RECORD - Maximum daily rainfall, 2.75 in., Jul. 6, 2015.

REMARKS - WY2011 Data are recorded to the nearest 5 minutes in the datalogger. Rainfall estimated to be 0.00 for Nov. 15, 18, 21, 28, Dec. 11, 29; Feb. 14, 16, 23, 28, Mar. 1, 7, 9, 15-16, 24, and Apr. 4, 16, 20 because recorded precipitation was interpreted as collector snowmelt. Daily values are marked as estimated on Dec. 30 and Apr. 1 because recorded precipitation was interpreted as a combination of rainfall and some collector snowmelt. Daily values estimated to be zero on Jul. 7, 9, Aug. 4, 26, 28 and Sep. 12 because recorded rainfall was interpreted as irrigation water. Following are the estimated amounts of irrigation: Jul. 7: 0.47 in., Jul. 9: 0.34 in., Aug. 4: 0.33 in., Aug. 26: 0.47 in., Aug. 28: 0.69 in., Sep. 12: 0.33 in. Daily rainfall from Oct. 1, 2010 - Nov. 11, 2010 estimated from station 05341687 Willow River at State Hwy 46 near Deer Park, WI. Irrigation estimated days: July 7, 9, Aug 4, 26, 28 and Sep 12 were estimated because recorded rainfall was interpreted as irrigation water. Rainfall records were compared to the other 2 Willow rain gages for this exercise. The following are the irrigation amounts (totalling 2.63”) Jul 7.: 0.47” Jul. 9; 0.34” Aug. 4: 0.33” Aug. 26: 0.47” Aug. 28: 0.69” Sep. 12: 0.33” Records are good except for estimated days, which are poor. WY2012 Data are recorded to the nearest 5 minutes in the datalogger. Rainfall estimated to be 0.00 for Nov. 21-22, Dec. 12, 31, Jan. 26-27, Feb. 15, 21, 28-29, and Mar 1-3 because recorded precipitation was interpreted as collector snowmelt. Daily values are marked as estimated on Jul. 11, Aug. 18, 31, and Sep 3 because some of the daily recorded precipitation was interpreted as irrigation water. The rainfall due to irrigation was removed from the record. Following are the estimated amounts of irrigation: Jul. 11: 0.55 in., Aug. 18: 0.62 in., Aug. 31: 0.29 in., Sep. 3: 0.59 in. Rainfall for Oct 27 estimated to be zero because no other nearby gages recorded precipitation. This may be from the irrigation system. Records are good except for estimated days, which are poor. WY2013 Data are recorded to the nearest 5 minutes in the datalogger. Rainfall estimated to be 0.00 for Dec. 8, 12, Jan. 12, 18, 28-29, Feb. 10, 18, 23-25, Mar. 7, 13-15, 22, 31, Apr. 10-13, 15, 19-20, 23, May 3- 4 because recorded precipitation was interpreted as collector snowmelt. Daily values are marked as estimated on Jan. 27, Apr. 14, and 21 because recorded precipitation was interpreted as a combination of rainfall and some collector snowmelt. Collector snowmelt was removed from the record. Daily values are marked as estimated on Jul. 17, 19-20, 24, 31, Aug. 3, 10, 14, 17, 20, 24, 27, 29, and Sep. 6 and 11 because some of the daily recorded precipitation was interpreted as irrigation water. The rainfall due to irrigation was removed from the record. Following are the estimated amounts of irrigation: 7/17 – 0.05”, 7/20 - 0.71”, 7/24/13 - 0.58”, 7/31 ~ 0.50”, 8/3 ~ 0.46”, 8/10 ~ 0.62”, 8/14 ~0.58”, 8/17 ~0.46”, 8/20 ~0.46”, 8/24 ~ 0.51”, 8/27 ~ 0.48”, 8/29 ~ 0.42”, 8/30- 8/31 ~0.10”, 9/6 ~ 0.40”, 9/11 ~ 0.68”. Records are good except for estimated days, which are poor. WY2014 Data are recorded to the nearest 5 minutes in the datalogger. Rainfall estimated to be 0.00 for Nov. 6-7 Dec. 2-4, 9, 27-28, Jan. 8, Feb. 18, 20, Mar. 9, 20-21, 28-29 and Apr. 4-5 because recorded precipitation was interpreted as collector snowmelt. Collector snowmelt was removed from the record. Daily values are marked as estimated on Apr. 3 because recorded precipitation was interpreted as a combination of rainfall and some collector snowmelt. Daily values estimated for Aug. 2 and 4 because suspected irrigation rainfall contributed to the daily total (0.73" and 0.65", respectively). Irrigation rainfall was removed from the record. Daily values for Oct 4-18 estimated from 450108092180101 DISCOVERY FARMS-WILLOW WEATHER NEAR WOODVILLE, WI due to equipment malfunction. Remarks.--Records are good except for estimated days, which are poor. All unit values and daily values are stored in ADAPS. WY2015 Data are recorded to the nearest 5 minutes in the datalogger. Rainfall estimated to be 0.00 for Nov. 22, 29, Dec. 8, 23, Jan. 3, 26, Mar. 23, 25, 31, and Apr. 15 because recorded precipitation was interpreted as collector snowmelt. Collector snowmelt was removed from the record. Daily values estimated for Aug. 4 because suspected irrigation rainfall contributed to the daily total (0.69"). Irrigation rainfall was removed from the record. Remarks.--Records are good except for estimated days, which are poor. All unit values and daily values are stored in ADAPS.

WATER-QUALITY RECORDS

PERIOD OF RECORD - November 2010 to September 2015.

INSTRUMENTATION - Water-quality sampler since November 2010.

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.