Green Peter Dam on the Middle Santiam River and the downstream Foster Dam on the South Santiam River in Oregon have altered natural seasonal temperature patterns in those rivers. In response, the U.S. Army Corps of Engineers is leading efforts to improve conditions for Chinook salmon upstream and downstream of these dams by considering structural alterations and by exploring changes to the way the dams are operated. This data release includes the input and output files from a mechanistic water-quality model (CE-QUAL-W2) that was developed for Green Peter and Foster Lakes and the South Santiam River downstream of Foster Dam. The model was used to estimate how operations at Green Peter and Foster Dams affect water temperature in Foster Lake and in the South Santiam River downstream of Foster Dam, and how the dams can be operated to produce more optimum water temperatures to support fish requirements. The model results provide guidance to reservoir operators and water-resource professionals who seek to manage the South Santiam River Basin for multiple purposes, including improved conditions for endangered anadromous fish.
Citation Information
| Publication Year | 2021 |
|---|---|
| Title | CE-QUAL-W2 water-quality model for Green Peter and Foster Lakes and the South Santiam River, Oregon: 2002-2011 |
| DOI | 10.5066/P9C1YRV3 |
| Authors | Annett B Sullivan |
| Product Type | Data Release |
| Record Source | USGS Digital Object Identifier Catalog |
| USGS Organization | Oregon Water Science Center |
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Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon
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Modeling water temperature response to dam operations and water management in Green Peter and Foster Lakes and the South Santiam River, Oregon
Significant FindingsGreen Peter and Foster Dams have altered natural seasonal temperature patterns in the South and Middle Santiam Rivers of the Willamette River Basin in northwestern Oregon. Cold-water releases from Green Peter Dam, upstream of Foster Lake, contribute to the cool-water conditions at Foster Dam. In summer, unseasonably cold water typically is discharged from Foster Dam into the Fo - Connect