Prosser Reach: Difference between revisions
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Overview | == Overview == | ||
The Prosser Reach is approximately 9 miles long beginning just below the Yakima/Benton County border at river mile 51 and ending at Snipes Creek at river mile 41.8. | The Prosser Reach is approximately 9 miles long beginning just below the Yakima/Benton County border at river mile 51 and ending at Snipes Creek at river mile 41.8. | ||
HUC: City of Prosser-Yakima River, 170300031007 | |||
== Tributaries == | |||
Tributaries | [[Spring and Snipes Creeks]] | ||
Spring and Snipes Creeks | |||
== Facilities == | |||
Prosser Diversion Dam at river mile 47 | Prosser Diversion Dam at river mile 47 | ||
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Hydrology | == Hydrology == | ||
Flow | |||
Target flows below Prosser and Sunnyside diversion dams were established under the authority of Federal Congressional legislation [https://www.usbr.gov/pn/programs/yrbwep/authorization/amended-legislation.pdf (Title XII; Public Law 103-434)] | |||
Initial target flows ranged from 300 to 600 cubic feet per second depending on water supply estimates. | |||
== Habitat Conditions == | |||
Water Quality | |||
Stream Temperature | |||
Water temperatures often exceed 26 degrees Celsius, below Prosser<ref>Snyder, E. B., and J. A. Stanford. 2001. Review and Synthesis of River Ecological Studies in the Yakima River, Washington, with Emphasis on Flow and Salmon Habitat Interactions. Flathead Lake Biological Station, University of Montana, Polson, MT.</ref>. Low base flows contribute to the problem. | |||
Impaired Waters (303d list) [https://apps.ecology.wa.gov/waterqualityatlas/wqa/map Washington State Water Quality Atlas] | |||
Temperature, dissolved oxygen, DDT in the Yakima River | |||
Fish Use | == Fish Use == | ||
Fall Chinook: Migration, Spawning, Rearing | |||
Summer Chinook: Migration, Rearing | |||
Spring Chinook | Spring Chinook: Migration, Rearing | ||
Sockeye Salmon | Sockeye Salmon: Migration | ||
Coho Salmon | Coho Salmon: Migration | ||
Steelhead Trout | Steelhead Trout: Migration | ||
Bull Trout | Bull Trout | ||
| Line 49: | Line 63: | ||
Smallmouth Bass | Smallmouth Bass | ||
Channel Catfish | |||
Smolt Survival | |||
== Limiting Factors == | |||
Hydrograph/Flow | |||
Water Quality - Stream Temperature | |||
Water Quality - Pesticide and Herbicide | |||
Water Quality - Fine Sediment | |||
Predation | |||
Floodplain habitat degradation | |||
== Citations == | |||
<references /> | |||
Latest revision as of 16:05, 3 September 2025
Overview
The Prosser Reach is approximately 9 miles long beginning just below the Yakima/Benton County border at river mile 51 and ending at Snipes Creek at river mile 41.8.
HUC: City of Prosser-Yakima River, 170300031007
Tributaries
Facilities
Prosser Diversion Dam at river mile 47
Chandler Canal
Prosser Sewer Treatment Plant
Prosser Hatchery and Enumeration Facility
Hydrology
Flow
Target flows below Prosser and Sunnyside diversion dams were established under the authority of Federal Congressional legislation (Title XII; Public Law 103-434)
Initial target flows ranged from 300 to 600 cubic feet per second depending on water supply estimates.
Habitat Conditions
Water Quality
Stream Temperature
Water temperatures often exceed 26 degrees Celsius, below Prosser[1]. Low base flows contribute to the problem.
Impaired Waters (303d list) Washington State Water Quality Atlas
Temperature, dissolved oxygen, DDT in the Yakima River
Fish Use
Fall Chinook: Migration, Spawning, Rearing
Summer Chinook: Migration, Rearing
Spring Chinook: Migration, Rearing
Sockeye Salmon: Migration
Coho Salmon: Migration
Steelhead Trout: Migration
Bull Trout
Lamprey
Pikeminnow
Smallmouth Bass
Channel Catfish
Smolt Survival
Limiting Factors
Hydrograph/Flow
Water Quality - Stream Temperature
Water Quality - Pesticide and Herbicide
Water Quality - Fine Sediment
Predation
Floodplain habitat degradation
Citations
- ↑ Snyder, E. B., and J. A. Stanford. 2001. Review and Synthesis of River Ecological Studies in the Yakima River, Washington, with Emphasis on Flow and Salmon Habitat Interactions. Flathead Lake Biological Station, University of Montana, Polson, MT.