USGS Water-Year Summary 2019
15058700 GOVERNMENT C NR KETCHIKAN AK
LOCATION - Lat 55°20'34", long 131°41'56" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 NW 1/4 sec.26, T.75 S., R.90 E., Ketchikan Gateway Borough, AK, Hydrologic Unit 19010102, (Ketchikan B-6), 0.52 miles upstream and West of mouth at Tongass Narrows.
DRAINAGE AREA - 2.02 mi².
- On October 01, 2013, the annual maximum discharge for the 2011 water year was revised. The revision supersedes figures previously published in Water-Data Report WDR-US-2011. Previous or subsequent revisions to data presented in this report, if any, are available in USGS Water Data for the Nation at http://waterdata.usgs.gov/nwis/inventory?search_site_no=15058700.
PERIOD OF RECORD - October 2009 to current year.
GAGE - Water-stage recorder. Elevation of gage is 130 ft above sea level, from topographic map.
PERIOD OF RECORD - April 2013 to current year.
INSTRUMENTATION - Electronic water-temperature recorder set for 15 minute recording interval.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum recorded, 19.0°C, July 30, 2018; minimum, 0.0°C on many days during winter periods.