containing a considerable amount of large rubble. About 10 percent 

 of the stream bed was classified as suitable spawning area. The 

 first obstructions were two recently formed log jams located about 

 3 miles and 3^ miles above the mouth* These and several other log 

 and debris jams farther upstream caused by road building operations 

 were at least barriers to fish at low water stages, and probably 

 limited the migration of salmon. A fair sized run of chinook salmon 

 formerly ascended as far as the confluence of the middle fork, 

 approximately 3^ miles above the mouth, and steelhead trout ascended 

 much farther upstream. These runs, especially the salmon, are now 

 greatly depleted. During the survey three chinook salmon spawners 

 were observed about one mile above the mouth, and a small spring run 

 of steelhead trout was reported. The North Fork is of slight present 

 value as a salmon producer, but its potential value would be increased 

 by the removal of log and debris jams. 



13CC-(6)a. Middle Fork. Catherine Creek .— (August 9, 19Ul; 

 Bryant.) The Middle Fork enters the north fork of Catherine Creek 

 approximately 3? miles above the mouth and extends for a distance of 

 about 5 miles. The stream had an average width of 6 feet near the 

 mouth, and was discharging about 5 c.f.s. at the time of the survey. 

 The gradient is steep, with numerous cascades and there is little 

 suitable spawning area. Like the north fork, it has been filled with 

 log and debris jams resulting from road building and logging opera- 

 tions, which impede the passage of fish. The stream is now also 

 blocked to salmon ascending at low water stages by jams on the north 

 fork. It formerly supported a small run of chinook salmon, but is of 

 no present value to salmon. A few steelhead trout are reported to 

 ascend at high water stages. 



13CC-(7). South Fork. Catherine Creek .— (August 9, 19Ulj 

 Frey.) The South Fork enters Catherine Creek approximately 29 miles 

 above the mouth and extends for a distance of about 9 miles. The 

 stream had an average width of 1$ feet near the mouth, and was dis- 

 charging about 27 c.f.s. at the time of the survey. The gradient, 

 although steep, is less than that of the other branches of Catherine 

 Creek. It was estimated that 13 percent of the stream bed consisted 

 of suitable spawning area, which was a larger amount than that found 

 in any of the other tributaries. There are numerous log and debris 

 jams, many being impassable to fish at low water stages. The South 

 Fork formerly supported the largest runs of chinook salmon and steeL- 

 head trout of the three branches of Catherine Creek. These runs have 

 been greatly depleted in recent years, principally because of ob- 

 structions in both Catherine Creek and the South Fork. The stream 

 is of little present value to salmon, but retains some value for a 

 spring run of steelhead trout. Its potential value to anadromous 

 fish could be greatly increased by the removal of log and debris 

 jams* 



53 



