Mendocino Humboldt Redwood Company, LLC
Plans & Reports

Watershed Analysis

Watershed Analysis is a process that characterizes watershed conditions affecting aquatic habitat through multi-disciplinary scientific analyses. These analyses are used to project future trends in watershed conditions. Using these projections, in consultation with state and federal agencies and after extensive public review, the Watershed Analysis Team generates forestry management and monitoring recommendations specific to each watershed.

Watershed analysis includes evaluation of several critical aquatic habitat indicators, and usually includes:

  1. Potential for landslides (mass wasting).
  2. Potential risk of soil movement from roads or exposed forest soils (surface and point erosion).
  3. Potential changes in stream flows (hydrology or hydrologic change).
  4. Shade cover and tree size near streams (riparian function).
  5. Large logs, spawning gravel, and deep pools in streams (stream channel condition).
  6. Habitat and distribution of fish (fish habitat condition or fisheries assessment).
  7. Habitat and distribution of amphibians and reptiles (amphibian & reptile assessment).

The evaluation process culminates in a discussion of the cumulative effects of forestry operations within the watershed, taking into consideration the land use history, geology, topography, climate, and ecology of the watershed (“Cumulative Watershed Effects” for HRC, “Synthesis” for MRC). In these documents, specific issues are identified and management recommendations are made. After management recommendations are implemented, certain watershed conditions may be monitored to determine whether the recommendations are having the desired outcome. The monitoring process may then result in a reevaluation of the watershed management recommendations specific to that area.

HRC finished watershed analysis for all watersheds in 2011, and immediately began the re-evaluation process. Freshwater and Elk River/Salmon Creek will both have the re-evaluation completed in 2012, followed by the other watersheds in the order they were originally completed.

Table 1 shows watershed analysis units and watershed analysis modules identified on MRC forestlands. Table 2 shows the watershed analysis modules for HRC forestlands. To view a report, please use the links located in the tables. Some of the files are large and may take a few minutes to load onto your computer, so be patient!

Table 1 – Watershed Analysis Reports for MRC

Modules Albion River South Coast Streams Big River Cottoneva Creek Elk Creek Garcia River Greenwood Creek Gualala River Hollow Tree Creek Navarro River Noyo Rockport Small Coastal Streams Upper Russian River Willow/Freezeout Creeks
Executive Summary PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Introduction PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Mass Wasting PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Surface and Point Erosion PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Hydrology PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Riparian PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Stream Channels PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Fish Habitat PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Amphibian Distribution Next update PDF Next update PDF PDF Next update PDF Next update Next update Next update Next update PDF PDF Next update
Sediment Inputs PDF * * * * PDF * PDF PDF PDF PDF * * PDF
Synthesis Next update PDF Next update PDF PDF Next update PDF Next update Next update Next update Next update PDF PDF Next update
Prescriptions PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Monitoring PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF

* In later watershed analyses, this module was subsumed into the Surface and Point Erosion and Synthesis modules.

Table 2 – Watershed Analysis Reports for HRC

Watershed Analysis Reports for HRC (the table contains links to summary reports; full reports including all appendices are available upon request – please contact HRC using the website contact form)

Modules Bear River (2008) Elk River/Salmon Creek (2005) Freshwater Creek (2003) Lower Eel/Eel Delta (LEED, 2004) Mattole River (2011) Upper Eel River (2007) Van Duzen River (2004) Yager & Lawrence Creeks (Public Review Draft, 2008)
Cumulative Effects Bear River Cumulative Effects Elk River – Salmon Creek Cumulative Effects Freshwater Creek Cumulative Effects Lower Eel – Eel Delta Cumulative Effects Mattole River Cumulative EffectsAttachments Upper Eel River Cumulative Effects Van Duzen River Cumulative Effects Yager-Lawrence Cumulative Effects
Mass Wasting Available on request Available on request Available on request Available on request

Available on request

Available on request Available on request Available on request
Surface Erosion Available on request Available on request Available on request Available on request

Available on request

Available on request Available on request Available on request
Riparian Function Available on request Available on request Available on request Available on request

Available on request

Available on request Available on request Available on request
Stream Channel and Hydrology* Available on request Available on request Available on request Available on request Available on request

Available on request Available on request Available on request
Fish Habitat Available on request Available on request Available on request Available on request

Available on request

Available on request Available on request Available on request
Amphibians & Reptiles Available on request Available on request Available on request Available on request

Available on request

Available on request Available on request Available on request
*The Hydrology module for more recent reports was combined with the Stream Channel Assessment report.