Washington Dept. of Fish and WildlifeFISH PASSAGE TECHNICAL ASSISTANCE

WDFW (Yakima Screen Shop)
Fish Screening Program Overview
(as of December 31, 1998)

Subbasin
or Area
Diversion
Type
Inventory
% Complete*
Number of
Diversions**
Diversions
Screened
# Screened to
WDFW 
Criteria***
Replace/
Upgrades
Needed
YSS O&M 
(gravity only)
Funded by: BPA
YSS O&M 
(gravity only)
funded by: 
NMFS(MA)
YSS O&M 
(gravity only)
funded by: 
Owner
Grande Ronde R. Gravity 100 1 1 1 0 0 1 0
Pump 100 1 1 1 0
Asotin Cr. Gravity 100 3 3 3 0 0 3 0
Pump 100 20 20 19 1
Tucannon R. Gravity 100 10 10 10 0 0 1 0
Pump 100 54 54 54 0
Lower C.R.+ Snake Pump 100 95 95 82 13
Snake ESA
Subtotals		 Gravity 100 14 14 14 0 0 5 0
Pump 100 170 170 156 14 NA NA NA
Klickitat R. Gravity 100 0
Pump 100 37 37 37 0
Walla Walla R. Gravity 80* 15 11 3 12 0 4 0
Pump 0 ? ? ? ?
Yakima R. Gravity 100 66 65 48 18 19 1 7
Pump 100 152 152 134 18
Wenatchee R. Gravity 100 8 8 6 2 0 0 0
Pump 100 59 59 59 0
Entiat R. Gravity 100 6 6 4 2 0 0 2
Pump 100 45 45 37 8
Methow R. Gravity 100 24 23 12 12 0 3 6
Pump 100 78 78 78 0
Okanogan R. Gravity 100 0
Pump 100 222 222 28 ?
Mid-Columbia R. Pump 100* 271 265 151 120
WDFW Resident Fish Gravity 0 ? 3 3 ?
Pump 0 ? ? ? ?
Dungeness R. Gravity 100 6 6 6 0 0 0 6
Pump 0 ? ? ? ?
West. Wash. Gravity 0 ? ? ? ?
Pump 0 ? ? ? ?
Gravity Totals = 139 136 96 46 19 13 21
Pump Totals = 1034 1028 680 160 NA NA NA

*100% inventory is for ANADROMOUS ZONE ONLY; "resident fish only" area of each subbasin has NOT been inventoried.
Walla Walla R. : 15 known gravity diversions, but only 12 (80%) have had screen condition assessed recently.
Okanogan R. : 222 pump stations located--175 in river, 47 in Lake Osoyoos (U.S. side); inventory field work complete, data analysis pending
to determine # in compliance.
Lower Columbia R.+ Snake R. : Snake R. inventory complete to WA-OR border; Lower C.R. complete from estuary to Snake R.
Mid-Columbia R. : inventory and data analysis complete Snake R. - Chief Joseph Dam.
West. Wash. : no YSS effort downstream of Klickitat R. on Columbia or in WW with exception of Dungeness Basin.
Totals reflect pump screen compliance re-inspections completed on Grande Ronde R./Joseph Cr., Asotin Cr., & Entiat R. in 1997
**Active diversions when last inspected
***Includes screens meeting "recent", but not necessarily current (1995) WDFW criteria. Considered "in compliance" if approach velocity 0.5 feet/sec or less and mesh opening 1/8 inch or less (constructed after Jan. 1, 1985 -- e.g. Yakima "Phase 1" screens).
This table does not included WDFW fish culture facility intake screens or FERC hydroelectric project screens which are not under state authority.

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