Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 06461500

Click to hide Water-Year Summary instructions and information
  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Mean,Min.,Max.)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Min.,Mean,Max.)  
00300 Dissolved oxygen(Mean,Min.,Max.)  
00400 pH(Min.,Med.)  

Water year 2022: 2021-10-01 to 2022-09-30

Print this page
USGS Water-Year Summary 2022
06461500 Niobrara River near Sparks, Nebr.
LOCATION - Lat 42°54'08", long 100°21'44" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 sec.22, T.34 N., R.26 W., Cherry County, NE, Hydrologic Unit 10150004, on left bank 18 ft downstream from highway bridge, 2.2 mi downstream from Big Beaver Creek, 5.5 mi downstream from Minnechaduza Creek, 6.0 mi Southwest of Sparks, and at mile 142.5.
DRAINAGE AREA - 7,150 mi².
REVISIONS HISTORY - WSP 1209: 1947(M), 1948-50(P). WDR NE-94-1: Drainage area.
PERIOD OF RECORD - October 1945 to current year. Monthly discharge only for some periods, published in WSP 1309.
GAGE - Water-stage recorder with satellite telemetry. Datum of gage is 2,287.57 ft above sea level.
REMARKS - Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For water years 2014 onward, records good except for estimated daily discharges, which are poor, unless otherwise noted. Natural flow of stream is affected by irrigation and power developments, storage in Box Butte Reservoir (Station 06455500); and since 1964, storage in Merritt Reservoir (06459300).
EXTREMES FOR PERIOD OF RECORD - Maximum peak flow, 10,200 ft³/s, from rating curve extended above 3,800 ft³/s, March 5, 1949, gage height, 6.73 ft. Maximum peak stage, 12.17 ft, February 5, 2014, backwater from ice.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: March, 2014 to November, 2014 SPECIFIC CONDUCTANCE: March, 2014 to November, 2014 pH: March, 2014 to November, 2014 DISSOLVED OXYGEN: March, 2014 to November, 2014
INSTRUMENTATION - Seasonal deployment of a continuous water-quality monitor during the 2014, 2017, and 2020 calendar years. Measured parameters included water temperature, specific conductance, pH, and dissolved oxygen. Dissolved oxygen measurements were collected using a luminescent sensor.
REMARKS - For March to November 2014, water temperature, dissolved oxygen and pH records were rated as excellent; specific conductance record was rated as good.

These extremes may have been exceeded during non-measured periods.

WATER TEMPERATURE: Maximum, 32.3°C, July 21,2017; minimum, 0.0°C, Several days during winter periods.

SPECIFIC CONDUCTANCE: Maximum, 283 uS/cm, June 30, 2014; minimum, 168 uS/cm, July 24, 2020.

DISSOLVED OXYGEN: Maximum, 15.5 mg/L, November 10, 2017; minimum, 4.9 mg/L, July 28, 2020.

pH: Maximum, 9.3 standard units, June 23, 2017; minimum, 7.1 standard units, August 17, 2017.