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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.
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USGS Water-Year Summary 2024
12113344 GREEN RIVER AT 200TH STREET AT KENT, WA
LOCATION - Lat 47°25'23", long 122°15'51" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.02, T.22 N., R.4 E., King County, WA, Hydrologic Unit 17110013, on upstream side of 200th street bridge, and at mile 17.
DRAINAGE AREA - 451 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 2011 to current year.
GAGE - Water stage recorder and crest stage gage. Datum of gage is NAVD of 1988.
REMARKS - This station is tidally influenced. U.S. Geological Survey satellite telemetry at station. Since Dec. 5, 1961, flow regulated by Howard A. Hanson Reservoir (station 12108500) 47.5 mi upstream from station for flood control and during summer months to augment the natural river flow. Minor diversions on upstream tributaries for domestic use. The City of Tacoma diverted an average daily discharge from the river at the headworks near Palmer, 44 mi upstream from station, for municipal use as follows:
| Water Year | Discharge (cfs) |
Water Year | Discharge (cfs) |
Water Year | Discharge (cfs) |
Water Year | Discharge (cfs) |
| 2014 | 59.4 | 2015 | 69.7 | 2016 | 90.2 | 2017 | 95.6 |
| 2018 | 90.3 | 2019 | 96.5 | 2020 | 92.4 | 2021 | 95.0 |
| 2022 | 96.0 | 2023 | 95.8 | 2024 | 69.7 |
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,720 ft³/s, Feb. 9, 2020, elevation, 33.23 ft; minimum discharge, 233 ft³/s, August 7th, 2015 elevation, 10.67 ft.
