Altered_laguna_cover_smThe Altered Laguna  The Laguna de Santa Rosa Foundation … developed a conceptual framework to address the following goals: 1) Improve our understanding of the Laguna system for basin scale planning and management; 2) Gather and analyze available data; 3) Identify data gaps, appropriate system indicators, monitoring regimes, and restoration targets; and 4) Specify further modeling efforts focused on the watershed. The impetus to this process is the project’ s important role in launching the Laguna Total Maximum Daily Load (TMDL) study to address water quality concerns, and to ensure that the appropriate watershed-scale scope is used for the TMDL-related work.



map_potter_haitt_smModeling river flows and sediment dynamics for the Laguna de Santa Rosa watershed in Northern California. C. Potter and S. Hiatt.  Abstract: The nonpoint source pollution model Soil and Water Assessment Tool (SWAT) was applied to understand management options that may improve water quality in the Laguna de Santa Rosa watershed in Sonoma County, California. Surface water quality in the Laguna watershed has been significantly impaired over recent years, as natural land cover has been urbanized or converted to agricultural uses. We first generated new maps of land cover and major land uses from satellite and airborne imagery for the watershed…more


biodiversity_plan_smallBiodiversity Action Plan, 2010. Priority Actions to Preserve Biodiversity in Sonoma County.
“The objective of this plan is to answer the following questions regarding Sonoma County’s natural heritage: What do we have? What are the threats? What can we do to reduce risk of losing our biodiversity? This plan is a resource for technical experts, land managers, funders, policy makers and interested citizens regarding the status and natural dynamics of local ecosystems and current threats to biodiversity. It advances a set of non-regulatory actions grounded in a collaborative multi-stakeholder approach to maintain biodiversity in Sonoma County for generations to come.”


lsr_watershed_Flint_usgsLinks to information about Colgan Creek and surrounding area.

A Guide to Resources and Services for management and stewardship of the Russian River Watershed

Conceptual Plan for Colgan Creek Restoration by PCI

Colgan Creek 2009 Stream  Inventory Report, CDFW

Cleanup and Abatement Order for The County of Sonoma Regarding Sonoma County Fairgrounds Bennett Valley Road, Santa Rosa Sonoma County
‘The Basket is in the Roots, That’s Where it Begins‘  Peri, David W and Patterson, Scott M.  Journal of California Anthropology,


News articles

Death by Dirty Water – Storm runoff a risk for fish.  ABC News, November 17, 2014

County breaks new trail at Taylor Mountain. Press Democrat article July 25, 2014

Santa Rosa eyes Colgan Creek restoration.  Press Democrat article July 31, 2010


Creek Care Guides

Colgen Creek Care – By Juliane Poirier for the Colgan Creek Restoration Project

Stewardship Guide for Russian River – By the Sotoyome Resource Conservation District

Creek Care, A guide for rural land owners and residents of Petaluma and Sonoma Creek watersheds. By Southern Sonoma County Resource Conservation District

My Healthy Stream  -A publication of Trout Unlimited and the Aldo Leopold Foundation

Creek Care Guide – Laguna Creek Watershed By Laguna Creek Watershed Council

Santa Cruz County


Laguna de Santa Rosa Foundation
Restore, Conserve & Inspire: Nurturing a Healthy Laguna.  Founded in 1989, the Laguna Foundation is a place-based organization focused on the Laguna de Santa Rosa, a Wetland of International Importance.

The Russian River Watershed Association is a coalition of eleven cities, counties and special districts in the Russian River Watershed that have come together to coordinate regional programs for clean water, fisheries restoration and watershed enhancement.

STRAW  Students and Teachers Restoring a Watershed

More Information

Santa_Rosa_Plain_aerialAerial photos of Santa Rosa Plain from 1942 and 2011

Upper Colgan Creek Restoration Plan

Lower Colgan Creek Restoration Plan

Water Quality Assessment

Colgan Creek Trail  Sonoma County Regional Parks

The Effects of Temperature on Steelhead Trout, Coho Salmon and Chinook Salmon Biology and Function by Life Stage. California Regional Water Quality Control Board, Northcoast Region.  2005