consist entirely of mud. Suitable spawning area first appears about 

 ^ mile below the village of Cove. A small power dam at Cove is a 

 total barrier to migratory fish. A few steelhead trout ascend to the 

 power dam, but Chinook salmon are not reported to enter. The stream 

 is used extensively for irrigation, and is of little possible value 

 to anadromous fish. 



13CC-(2). Ladd Creek » — (August 11, 19Ulj Frey and Bryant.) 

 Ladd Creek enters Catherine Creek about 6| miles above the mouth. It 

 is a small stream, about 15 miles long, extending through a highly 

 cultivated region. The gradient is slight throughout most of the 

 course, and the stream bed is composed chiefly of mud. In the upper 

 third of the course, where the gradient is moderate and the stream bed 

 is composed of gravel, the flow is only 2-3 c.f.s., and the stream is 

 too small to be of value to salmon. 



13CC-(3)« Little Creek , — (August 12, 19ulj Frey and Bryant.) 

 Little Creek is a small, intermittent stream entering Catherine Creek 

 about 10^ miles above the mouth. It extends for about 2h miles, and 

 is used so extensively for irrigation that water must be diverted from 

 Catherine Creek into the lower part of the course. In the lower section 

 the gradient is slight and the stream bed is composed of mud. Several 

 irrigation diversion dams are barriers to the migration of fish. The 

 stream is too small in the upper section to be of any possible value to 

 salmon* 



13CC-(U). Pyle Creek . — (August 12, 19Ulj Frey and Bryant.) 

 Pyle Creek is a small, intermittent stream entering Catherine Creek 

 about 11^ miles above the mouth. It discharges only 1^-2 c.f.s. during 

 the summer months, most of the flow being used for irrigation. The 

 gradient is slight, and the stream bed is composed chiefly of silt. 

 The stream is of no possible value to salmon* 



13CC-(5), little Catherine Creek *— (August 13, 19Ulj Frey and 

 Bryant.) Little Catherine Creek enters Catherine Creek approximately 

 2$ miles above the mouth and extends for a distance of about 7 miles. 

 It is a small stream, the average discharge during the summer being 

 only about £ c.f.s. One-fourth mile above the mouth the stream emerges 

 from a narrow canyon having a steep gradient, numerous log and debris 

 jams, and little suitable spawning area. The lower quarter-mile has 

 some spawning area, and may be utilized by a few salmon in years when 

 the stream is not too shallow for them to enter. The lower section 

 is also of some possible value to steelhead trout, 



13CC-(6). North Fork, Catherine Creek .— (August 9, 19ulj 

 Frey and Bryant.) The North Fork enters Catherine Creek approximately 

 29 miles above the mouth and extends for a distance of about 11 miles. 

 The stream was 21 feet wide near the mouth, and was discharging about 

 28 c.f.s. at the time of the survey. It is not a particularly good 

 appearing salmon stream, the gradient being steep and the stream bed 



52 



