Watershed Analysis Documents

List of Watershed Analysis Documents | Watershed Analysis Locator Map

The table below lists the Watershed Analysis Documents for the Willamette National Forest.  

We are currently working on converting our hardcopy documents into digital format. We will add links to the digital documents from this page as they are available. Please check back.

Ranger District Watershed analysis Completed Updated
Detroit Blowout (part of N. Santiam Middle) 1994 2000
Detroit Breitenbush 1996 2014
Detroit Upper North Santiam 1995 2007
Detroit Little North Santiam 1998  
Detroit Detroit Tributaries 1997  
Sweet Home South Santiam 1995 2005
Sweet Home Middle Santiam 1996  
Sweet Home Quartzville 2002  
Sweet Home Calapooia River (Upper Calapooia River) 1999  
McKenzie River South Fork McKenzie River 1994 2010
McKenzie River Upper McKenzie River (also on Sweet Home & Detroit) 1995 2011Sweet Home, 2006
McKenzie River Blue River 1996  
McKenzie River Horse Creek 1997  
McKenzie River Quartz Creek and Minor Tributaries (Quartz Creek - McKenzie River) 1998  
Middle Fork North Fork of Middle Fork Willamette 1995  
Middle Fork Upper Middle Fork Willamette 1996 2002, 20082
Middle Fork Salmon Creek 1996  
Middle Fork Winberry and Lower Fall Creek 1996  
Middle Fork Little Fall Creek / Hills Creek 1997  
Middle Fork Fall Creek 1995  
Middle Fork Hills Creek 1998  
Middle Fork Middle Fork Willamette, Downstream Tribs aka Hills Creek Reservoir 1995  
Middle Fork Lookout Point 1997  2012
Middle Fork Salt Creek 1997  

1Straight Creek/Upper North Santiam received a GIS vegetation update in 2009.  No document available to post.
2Pioneer Gulch located in the Upper Middle Fork received a vegetation update in 2008.

What are Watershed Analyses?

The Northwest Forest Plan (NFP - USDA/USDI 1994) was developed to maintain and restore the ecology of federal lands within the range of the northern spotted owl, focusing on older forests (Late Successional Reserves) and watershed health (Aquatic Conservation Strategy - ACS). To accomplish this goal, forests are required to prepare Watershed Analysis documents.

A watershed analysis is intended to:

  • Provide site-specific information to meet ACS objectives in future project planning
  • Provide the basis for restoration and monitoring programs for terrestrial and aquatic species,
  • Provide the foundation from which Riparian Reserves (streamside zones) can be delineated.

Watershed analyses generally follow the outline described in the updated Federal Guide for Watershed Analysis - Ecosystem Analysis at the Watershed Scale (Federal Guide - Version 2.2, August 1995). Recommendations for maintaining and restoring natural processes on National Forest lands can be included to help guide future project planning. Opportunities for restoration on private land can also be discussed; private landowners and other organizations can use this information to support projects outside Forest Service jurisdiction.

A watershed analysis is not a decision-making document. Future project planning will use these documents as a starting point, however new information, environmental or policy changes, and/or site-specific conditions could lead to new findings and recommendations. The documents should be considered iterative; new information will be incorporated as it becomes available.


Please contact the Forest Planner for the Willamette National Forest