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- W4207013513 abstract "During the summer low flow period, a habitat assessment of the Similkameen, Tulameen, Ashnola and Pasayten rivers in British Columbia and Washington State was conducted between August 10 and October 10, 1983. The biophysical survey assessed 400 km (250 mi) of stream at 77 stations. Fish sampling was conducted at each station to assess the resident fish populations and standing crop. Rainbow trout populations and standing crops were found to be very low. Large populations of mountain whitefish and bridgelip suckers were present in the manstem Similkameen River below Similkameen Falls. High densities of sculpins and longnose dace were found throughout the system except for sculpins above the falls, where none were captured. Approximately 961,000 m/sup 2/ (1,150,000 yd/sup 2/) of spawnable area for steelhead trout were estimated for the entire system which could accommodate 98,000 spawners. Nearly 367,000 m/sup 2/ (439,000 yd/sup 2/) of chinook salmon spawnable area was also estimated, capable of accommodating 55,000 chinook. Rearing area for steelhead trout smolts was estimated for the whole system at 1.8 million m/sup 2/ (2.2 million yd/sup 2/). Chinook salmon smolt rearing area was estimated at 700,000 m/sup 2/ (837,000 yd/sup 2/). Rearing area was found to be a limiting factor to anadromous production in a Similkameen River system. Smolt production from the system was estimated 610,000 steelhead trout and between 1.6 million and 4.8 million chinook salmon. No water quality, temperature or flow problems for anadromous salmonids were evident from the available data and the habitat inventory. In addition to an impassable falls on the Tulameen River at river mile 32.5, only two other areas of difficult passage exist in the system, Similkameen Falls (a series of chutes) and the steep, narrow lower section of the Ashnola River. 51 references, 18 figures, 25 tables." @default.
- W4207013513 created "2022-01-26" @default.
- W4207013513 creator A5025043765 @default.
- W4207013513 date "1984-04-01" @default.
- W4207013513 modified "2023-09-23" @default.
- W4207013513 title "Natural Propagation and Habitat improvement, Volume 2B, Washington, Similkameen River Habitat Inventory, 1983 Final Report." @default.
- W4207013513 doi "https://doi.org/10.2172/6604014" @default.
- W4207013513 hasPublicationYear "1984" @default.
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