The Emrlch (or Emrie) Irrigation ^itch takes off from the 

 north bank 34 miles upstreamo It has a capacity of 4 c.foSo, and 

 is screenedo 



The Andersor Ditch takes off from the north bank 36 miles 



upstream. It has a capacity of 6 c.f.s.p and is screened. During 

 periods of high water part of the flov/ of Gold Creek is also diverted 

 through this ditch. 



The Fontaine Ditch takes off from the south hank 37 miles upstream. 

 It has a capacity of 3 c.fcSo, and was not screened at the time of in- 

 spectiono 



4D"(l). €owiche Creek o— (Augupt 1, 1936 s V/hiteleather.) 

 Joins the Naches River 3. 2. miles above the mouth of the latter^ and 

 extends for 7 miles to the confluence Qf the North and South Forks. 

 The gradient is slipiht to moderate and silting nov/ occurs on most 

 of the spawning areas. The flow is so reduced by irrigation demands 

 that the stream bed is often dry in places. The survey party found 9 

 unscreened diversionSj each above a 1'' to 3 foot high dam that diverted 

 all or nearly all of the stream flow at that point. It is reported 

 to have been a good trout streem, and steelhead utilized the stream 

 be:fore extensive irrigation was undertaken. In its present condition 

 the creek has little or no value to migratory fish, and irrigation 

 demands make any attempt at improving or restocking unfeasible. The 

 lower 5 miles of the ^North Fork is usually dry in the summer, and part 

 of its channel is utilized by the Tieton Canal. The South Fork has 5 

 unscreened irrigation diversions that utilize almost all of its water. 



4D"(2)« Tieton River .— (July 11 to 13, 1935| Whiteleather and 

 Btirrows.) Joins the Naches River 16 l/2 miles above the mouth of 

 the latter^ and extends for 22 miles to the Tieton Reservoir (Rimrock 

 Lake) o It has been completely surveyed. Most of the water course is 

 in a heavily forested, eteep walled canyon. The gradient is consistently 

 moderate^ averaging 51 feet per mile. There are occasional good deep 

 resting pools, and riffles are nimierous but have a considerable portion 

 of large rubble. Fair spawning areas are found thraofhout. The stream 

 value is greatly reduced by the control of the stream flow at the Rimrock 

 Dam. During flood and irrigation saaaonSj the discharge at the dam may be 

 1,000 to 2„Q0C c.f.s,, although it is usually around 500 c.f.s. When water 

 is being stored from November to April the flow is usually cut to less than 

 100 c.f.s. and may be below 10 o.f.s. at times« A few spring chinook and 

 steelhead are reported ajfclll to utilize the stream, -Iwit they are only a 

 email portion of the runs in former years. Kokanee have been stocked in 

 Rlnwoci: Lake (Tieton Reservoir), but often are killed or injured by passage 

 over rhe spillway or througji the tunnel outlet. Numbers of injured and 

 fungused Individuals were seen in the river by the survey party. 



The following obstructions WBid^ dlwaoalions were foundo 



An irrigation ditch takes off from the south bank l/4 mile upstream. 

 It was diverting 12 l/2 c.f.s . at the time of Iwspjpation, &nd sinoe has 

 •been reported to have been a«i^««ned« 



34 



