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DESCRIPTION:

Latitude 36°51'07",   Longitude 99°18'54"   NAD27

Harper County, Oklahoma, Hydrologic Unit 11050001

Drainage area: 12,205 square miles

Contributing drainage area: 8,177 square miles,

Datum of gage: 1,600.15 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2025-09-05
Daily Data
Discharge, cubic feet per second	1960-05-01	2025-09-06	21227
Daily Statistics
Discharge, cubic feet per second	1960-05-01	2024-09-30	20886
Monthly Statistics
Discharge, cubic feet per second	1960-05	2024-09
Annual Statistics
Discharge, cubic feet per second	1960	2024
Peak streamflow	1960-06-08	2024-07-02	58
Field measurements	1980-12-04	2025-08-20	265
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1953-02-12	1994-07-05	789
Water-Year Summary	2006	2024	19
Revisions	Loading...

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