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- 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.
USGS Water-Year Summary 2024
15564880 SF KOYUKUK R NR COLDFOOT AK
LOCATION - Lat 67°01'09.98", long 150°17'33" referenced to North American Datum of 1983, in sec.6, T.25 N., R.12 W., Yukon-Koyukuk Division, AK, Hydrologic Unit 19090102,
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2024 to current year (seasonal record only)
GAGE - Water-stage recorder. Datum unknown.
EXTREMES FOR PERIOD OF RECORD -
WATER-QUALITY RECORDS
PERIOD OF RECORD - August 2024 to current year (seasonal records only).
INSTRUMENTATION - Q.W. - A multi-parameter sonde measuring Water Temperature, Specific Conductance, and Turbidity. Sonde readings are checked against a calibrated field Sonde at each site visit. After readings are compared, the monitoring sonde is either cleaned, calibrated, and replaced in the stream, or swapped with a newly calibrated Sonde.
EXTREMES FOR PERIOD OF RECORD -
SPECIFIC CONDUCTANCE: Maximum, 275 µS/cm, Sept. 15, 2024; Minimum, 168 µS/cm, Aug. 19, 2024.
WATER TEMPERATURE: Maximum, 13.5°C, July 8, 2024; minimum, 4.4°C September 20, 2024. 0.0 °C Many days during winter and spring breakup periods when probe is removed.
