PDFWAC 173-557-040

Stream management units.

Stream management units, control stations, and their application to surface water and groundwater withdrawals are established as shown in Table 1. Control stations are shown in the map in WAC 173-557-110.
Table 1
Stream Management Unit Information
Stream Management Unit Name and Control Station Gauge #
Control Station by River Mile (RM); Latitude (Lat.), Longitude (Long.)
Application to Surface Water and Groundwater Withdrawals
Spokane River at Spokane
USGS gauge #12422500
RM 72.9; 47.65983N, 117.44911W
(NAD 83)
Year-round instream flows for regulating surface water withdrawals from Sullivan Road bridge to Seven Mile bridge, and for regulating groundwater withdrawals within the boundary of the SVRP aquifer in Washington state
Spokane River at Greenacres (Barker Road) USGS gauge #12420500
RM 90.5; 47.67740N, 117.15215W
(NAD 83)
June 16 - September 30 instream flows for regulating surface water withdrawals between the Idaho state line and Sullivan Road bridge
[Statutory Authority: Chapters 90.54, 90.22, 90.82, 90.03, 90.44, 18.104, and 43.27A RCW. WSR 15-04-033 (Order 13-11), § 173-557-040, filed 1/27/15, effective 2/27/15.]