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4.8 Hydrology and Water Quality
SOUTHEAST GREENWAY GENERAL PLAN AMENDMENT AND REZONING DRAFT EIR CITY OF SANTA ROSA HYDROLOGY AND WATER QUALITY 4.8 HYDROLOGY AND WATER QUALITY This chapter includes an evaluation of the potential environmental consequences associated with the adoption and implementation of the proposed project that are related to hydrology and water quality. Additionally, this chapter describes the environmental setting, including regulatory framework and existing conditions, and identifies mitigation measures, if required, that would avoid or reduce significant impacts. 4.8.1 ENVIRONMENTAL SETTING 4.8.1.1 REGULATORY FRAMEWORK Federal Regulations Clean Water Act The Clean Water Act (CWA) of 1977, as administered by the United States Environmental Protection Agency (USEPA), seeks to restore and maintain the chemical, physical, and biological integrity of the nation’s waters. The CWA employs a variety of regulatory and non-regulatory tools to reduce direct pollutant discharges into waterways, finance municipal wastewater treatment facilities, and manage polluted runoff. The CWA authorizes the USEPA to implement water-quality regulations. The National Pollutant Discharge Elimination System (NPDES) permit program under Section 402(p) of the CWA controls water pollution by regulating stormwater discharges into the waters of the United States. California has an approved State NPDES program. The USEPA has delegated authority for water permitting to the State Water Resources Control Board (SWRCB) and the North Coast Regional Water Quality Control Board (RWQCB) (Region 1). Section 303(d) of the CWA requires that each state identify water bodies or segments of water bodies that are “impaired” (i.e., not meeting one or more of the water-quality standards established by the state). -
Storm Water Management Plan
PhasePhase IIII NPDESNPDES StormStorm WaterWater ManagementManagement PlanPlan March 2005 Prepared By WINZLER&KELLY CONSULTING ENGINEERS Town of Windsor Phase II NPDES Storm Water Management Plan Project No. 03-228303-003 Project Contacts: Toni Bertolero Project Manager [email protected] Brian Bacciarini Staff Scientist [email protected] Winzler & Kelly Consulting Engineers 495 Tesconi Circle, Suite 9, Santa Rosa, California 95401 Phone: (707) 523-1010 Fax: (707) 527-8679 March 2005 Reviewed by:__________ Date:__________ TABLE OF CONTENTS 1.0 Background...........................................................................................................................1 1.1 Regulatory Background..................................................................................................1 1.2 Town Resources .............................................................................................................2 1.2.1 Public Works Department..................................................................................2 1.2.2 Planning Department..........................................................................................2 1.2.3 Building Division ...............................................................................................3 1.2.4 Economic Development and Community Services Department .......................3 1.2.5 Administrative Services Department .................................................................3 1.3 Outside Agencies............................................................................................................3 -
HISTORICAL CHANGES in CHANNEL ALIGNMENT Along Lower Laguna De Santa Rosa and Mark West Creek
HISTORICAL CHANGES IN CHANNEL ALIGNMENT along Lower Laguna de Santa Rosa and Mark West Creek PREPARED FOR SONOMA COUNTY WATER AGENCY JUNE 2014 Prepared by: Sean Baumgarten1 Erin Beller1 Robin Grossinger1 Chuck Striplen1 Contributors: Hattie Brown2 Scott Dusterhoff1 Micha Salomon1 Design: Ruth Askevold1 1 San Francisco Estuary Institute 2 Laguna de Santa Rosa Foundation San Francisco Estuary Institute Publication #715 Suggested Citation: Baumgarten S, EE Beller, RM Grossinger, CS Striplen, H Brown, S Dusterhoff, M Salomon, RA Askevold. 2014. Historical Changes in Channel Alignment along Lower Laguna de Santa Rosa and Mark West Creek. SFEI Publication #715, San Francisco Estuary Institute, Richmond, CA. Report and GIS layers are available on SFEI’s website, at http://www.sfei.org/ MarkWestHE Permissions rights for images used in this publication have been specifically acquired for one-time use in this publication only. Further use or reproduction is prohibited without express written permission from the responsible source institution. For permissions and reproductions inquiries, please contact the responsible source institution directly. CONTENTS 1. Introduction .....................................................................................1 a. Environmental Setting..........................................................................2 b. Study Area ................................................................................................2 2. Methods ............................................................................................4 -
Chapter 8 Infrastructure
CITY OF SANTA ROSA EXISTING CONDITIONS REPORT PLANNING AND ECONOMIC DEVELOPMENT DECEMBER 2020 CHAPTER 8 INFRASTRUCTURE IN THIS CHAPTER Water Supply Distribution | Stormwater Drainage and Water Quality | Dry Utilities 8.1 INFRASTRUCTURE FINDINGS Water Supply and Distribution 1. The City’s Water Department provides water service to approximately 178,000 people through 53,000 service connections. The Sonoma County Water Agency supplies most of the water, and the City uses groundwater to supplement the water supply. 2. The City has identified projects needed to increase water delivery capacity. Under the guidance of the Water Master Plan Update, the City has completed the 17 highest- priority capital improvement projects and 55 more projects are currently in design, planned, or under construction. Wastewater Collection and Treatment 3. The City maintains 590 miles of sewer system infrastructure. The sewer system discharges into the Laguna Wastewater Treatment Plant, which can treat up to 21.34 million gallons per day before releasing it into the Russian River. 4. The Sanitary Sewer System Master Plan identifies several trunk line replacements or improvements needed to reduce the flow of stormwater and groundwater into the aging sewer system. Stormwater Drainage and Water Quality 5. Santa Rosa uses a combination of closed conduit and open channel systems to convey stormwater runoff from six primary drainage basins to the major creeks that run through the city. The city’s creeks discharge into the Laguna de Santa Rosa, which eventually discharges surface waters into the Russian River. 6. The southern portion of the city has flooded historically along Colgan Creek and Roseland Creek. -
2018 Stream Maintenance Program
2018 Stream Maintenance Program Improving water quality in our streams while providing flood protection for our community This summer the Sonoma County Water Agency (Water Agency) will be working in streams and channels throughout Sonoma County to improve water quality and provide flood protection. As part of our comprehensive Stream Maintenance Program (SMP), we will be removing sediment and garbage and planting trees to create shady riparian canopies. These canopies help cool the water and shade out less desirable species of plants, which can catch debris and reduce the streams’ water-carrying capacity. If necessary, we will remove some non-canopy forming trees such as arroyo willows as well as certain dense shrubs such as non-native and invasive blackberries. Sediment removal activities include planting native trees, shrubs, and some aquatic plants according to a certain pattern to establish canopy while maintaining channel capacity. The Sonoma County Youth Ecology Corps (SCYEC), a workforce training and ecosystem education program aimed at educating youth and young adults in environmental stewardship and restoration, will be working with the SMP this summer. The SCYEC provides youth and young adults paychecks, valuable work experience, environmental education, and the opportunity to contribute to their community through ongoing outdoor experiences. Below is the list of streams the Water Agency will be maintaining this summer. For a more detailed list, map of locations, and information on stream maintenance, visit www.sonomacountywater.org. -
Dear Friends, Sonoma County Is Celebrating the Winter and Spring Rains Which Have Left Our Rivers and Creeks with Plenty of Clea
This picture of Mark West creek was taken in April by our intern, Nick Bel. Dear Friends, Sonoma County is celebrating the winter and spring rains which have left our rivers and creeks with plenty of clear clean water going into summer. Many of CCWI’s water monitors have noted that local rivers and creeks have more water and are more beautiful than they have been in the past several years. This is a very promising start to the summer season, but we should not let our guard down just yet. Several years of drought have left us with a shortage of water in many reservoirs so we must still be conscious of how we use and protect this precious resource. CCWI has a new program Director! Art Hasson joined the Community Clean Water Institute in 2008 as an intern and volunteer water monitor. Art has a business degree from the State University of New York, which he has put to good use as our new program director. He has updated our water quality database engaged in field work, performed flow studies and bacterial analysis for the past two years. Art is focused on protecting our public health through the preservation of our waterways. CCWI would like to thank outgoing program director Terrance Fleming for his hard work and valuable contributions to protect water resources. We wish him the very best in his future endeavors. CCWI would like to thank our donors for their support in building our online database interactive database. It contains nine years of data that CCWI volunteer water monitors have collected on local creeks and streams in and around Sonoma County. -
MAJOR STREAMS in SONOMA COUNTY March 1, 2000
MAJOR STREAMS IN SONOMA COUNTY March 1, 2000 Bill Cox District Fishery Biologist Sonoma / Marin Gualala River 234 North Fork Gualala River 34 Big Pepperwood Creek 34 Rockpile Creek 34 Buckeye Creek 34 Francini Creek 23 Soda Springs Creek 34 Little Creek North Fork Buckeye Creek Osser Creek 3 Roy Creek 3 Flatridge Creek 3 South Fork Gualala River 32 Marshall Creek 234 Sproul Creek 34 Wild Cattle Canyon Creek 34 McKenzie Creek 34 Wheatfield Fork Gualala River 3 Fuller Creek 234 Boyd Creek 3 Sullivan Creek 3 North Fork Fuller Creek 23 South Fork Fuller Creek 23 Haupt Creek 234 Tobacco Creek 3 Elk Creek House Creek 34 Soda Spring Creek Allen Creek Pepperwood Creek 34 Danfield Creek 34 Cow Creek Jim Creek 34 Grasshopper Creek Britain Creek 3 Cedar Creek 3 Wolf Creek 3 Tombs Creek 3 Sugar Loaf Creek 3 Deadman Gulch Cannon Gulch Chinese Gulch Phillips Gulch Miller Creek 3 Warren Creek Wildcat Creek Stockhoff Creek 3 Timber Cove Creek Kohlmer Gulch 3 Fort Ross Creek 234 Russian Gulch 234 East Branch Russian Gulch 234 Middle Branch Russian Gulch 234 West Branch Russian Gulch 34 Russian River 31 Jenner Creek 3 Willow Creek 134 Sheephouse Creek 13 Orrs Creek Freezeout Creek 23 Austin Creek 235 Kohute Gulch 23 Kidd Creek 23 East Austin Creek 235 Black Rock Creek 3 Gilliam Creek 23 Schoolhouse Creek 3 Thompson Creek 3 Gray Creek 3 Lawhead Creek Devils Creek 3 Conshea Creek 3 Tiny Creek Sulphur Creek 3 Ward Creek 13 Big Oat Creek 3 Blue Jay 3 Pole Mountain Creek 3 Bear Pen Creek 3 Red Slide Creek 23 Dutch Bill Creek 234 Lancel Creek 3 N.F. -
Prioritizing Investments in Our Community's Recovery & Resiliency
Prioritizing Investments in Our Community’s Recovery & Resiliency PG&E Settlement Funds Community Input Survey Data Compilation Responses collected September 15 to October 25, 2020 1 Begins on Page 3 ………………………………………………………. Graph data for Spanish Survey Responses Begins on Page 22 …………………………………..…………………. Graph Data for English Survey Responses Begins on Page 42 ……………….. Open-Ended Response: Shared ideas (Spanish Survey Responses) Begins on Page 44………………….. Open-Ended Response: Shared ideas (English Survey Responses) Begins on Page 189 ..………... Open-Ended Response: Comments for Council (Spanish Responses) Page 190………..……….. Open-Ended Response: Comments for Council (English Survey Responses) 2 SPANISH SURVEY RESPONSES Did you reside within the Santa Rosa city limits during the October 2017 wildfires? Total Responses: 32 yes no 6% 94% 3 SPANISH SURVEY RESPONSES Was your Santa Rosa home or business destroyed or fire damaged in the 2017 wildfires, or did a family member perish in the 2017 wildfires? Total Responses: 32 yes no 25% 75% 4 SPANISH SURVEY RESPONSES Do you currently reside within the Santa Rosa city limits? Total Responses: 32 yes no 13% 87% 5 SPANISH SURVEY RESPONSES Survey Respondents Current Area of Residence 32 Surveys Did not Respond Outside SR within 3% Sonoma County 3% Northwest SR 38% Northeast SR 22% Southwest SR 34% 6 SPANISH SURVEY RESPONSES Where do you reside? Outside City Limits No Response City Limits Out of County Out of State within Sonoma County Provided Northeast Sebastopol 1 - 0 - 0 unknown 1 Fountaingrove 1 -
Integrated Surface and Groundwater Modeling and Flow Availability
Integrated Surface and Groundwater Modeling and Flow Availability Analysis for Restoration Prioritization Planning, Upper Mark West Creek Watershed, Sonoma County, CA Wildlife Conservation Board Grant Agreement No. WC-1996AP Project ID: 2020018 December 2020 Prepared for: Sonoma Resource Conservation District 1221 Farmers Lane, Suite F, Santa Rosa, CA 95405 and State of California, Wildlife Conservation Board 1700 9th Street, 4th Floor, Sacramento, CA 95811 Prepared by: O’Connor Environmental, Inc. PO Box 794, Healdsburg, CA 95448 Under the direction of: Coast Range Watershed Institute 451 Hudson Street, Healdsburg, CA 95448 www.coastrangewater.org Jeremy Kobor, MS, PG #9501 Senior Hydrologist Matthew O’Connor, PhD, CEG #2449 President William Creed, BS Hydrologist Dedication In recognition of those many residents of the Mark West Creek watershed that have suffered losses in the past few years to the Tubbs Fire and the Glass Fire, we dedicate this report in their honor. Many of the citizen contributors to this effort have been working for many years to advance the consciousness of the community with respect to wildfire hazards, fuel management and fire safe communities, and it is an unfortunate truth that there remains much to be done. We dedicate this report in the spirit of community service and the example that has been set by these citizens, families, friends, and communities. Acknowledgements Many individuals and organizations contributed to the successful completion of this project including the various members of the project team from the Sonoma Resource Conservation District, Coast Range Watershed Institute, O’Connor Environmental Inc., Friends of Mark West Watershed, the Pepperwood Foundation, and Sonoma County Regional Parks. -
A Menu of Fire Response Water Quality Monitoring Options and Recommendations for Water Year 2019 and Beyond
A Menu of Fire Response Water Quality Monitoring Options and Recommendations for Water Year 2019 and Beyond Lester McKee, Sarah Pearce, Alicia Gilbreath, Sarah Lowe, and Jennifer Hunt July 31, 2018 Contents Executive Summary .................................................................................................................................. 3 Introduction ............................................................................................................................................... 5 Monitoring Elements for Future Consideration ........................................................................................ 6 Water Chemistry ................................................................................................................................... 6 Hydromodification .............................................................................................................................. 19 Geomorphic response (Erosion and sediment yield) .......................................................................... 21 Ecology ............................................................................................................................................... 27 References ............................................................................................................................................... 29 Attachment A: QA Review, Method Sensitivity Evaluation, and Plotted Data ...................................... 31 QA Review and Method Sensitivity Evaluation .................................................................................... -
Chapter 7: Sustaining Our Water Resources
SUSTAINING OUR WATER RESOURCES Watersheds are nested drainages, incorporating the entire land surface that collects water flowing to a geographic point. Different maps and planning documents refer to the Laguna channel and the Laguna watershed in dif- ferent ways, sometimes splitting off the Santa Rosa and Mark West Creeks as separate drainages. Within this plan, we define the Laguna watershed as the area that incorporates all these sub-basins, and when this definition needs to be underscored the phrase “greater Laguna watershed” is applied. This watershed definition is more ecologically appropriate, reflecting the biological and physical properties of the system. However, for regulatory purposes, the Laguna, Santa Rosa Creek and Mark West Creeks are split into separate drainages, as discussed below. Water quality concerns in the Laguna cannot be easily separated from the issues related to the Laguna’s hydrology and water dynamics. Restoring the Laguna’s water resources will require integrated research, planning and collaboration. HYDROLOGY The Laguna watershed has a complex and diverse hydrology—cool-water high-gradient creeks in the upper watershed flow down the hillsides to High gradient creeks, vernal pools, slow moving the broad, flat, vernal pool-dotted Santa Rosa Plain, meeting the warm, channel slow-moving Laguna main channel, that flows northward to join the Rus- sian River. During very large storms, the Russian River backs up into the Laguna’s low-gradient basin near Windsor and Mark West Creeks: this alleviates flooding in the lower Russian River valley, and strongly affects the Laguna ecosystem. In part because of these back flows, and in part Backflow, sediment retention, disconnected because of localized topographic constrictions, the Laguna does not have ponds scouring floods, and retains much sediment within its channels and flood- plains. -
NPDES Water Bodies
Attachment A: Detailed list of receiving water bodies within the Marin/Sonoma Mosquito Control District boundaries under the jurisdiction of Regional Water Quality Control Boards One and Two This list of watercourses in the San Francisco Bay Area groups rivers, creeks, sloughs, etc. according to the bodies of water they flow into. Tributaries are listed under the watercourses they feed, sorted by the elevation of the confluence so that tributaries entering nearest the sea appear they first. Numbers in parentheses are Geographic Nantes Information System feature ids. Watercourses which feed into the Pacific Ocean in Sonoma County north of Bodega Head, listed from north to south:W The Gualala River and its tributaries • Gualala River (253221): o North Fork (229679) - flows from Mendocino County. o South Fork (235010): Big Pepperwood Creek (219227) - flows from Mendocino County. • Rockpile Creek (231751) - flows from Mendocino County. Buckeye Creek (220029): Little Creek (227239) North Fork Buckeye Crcck (229647): Osser Creek (230143) • Roy Creek (231987) • Soda Springs Creek (234853) Wheatfield Fork (237594): Fuller Creek (223983): • Sullivan Crcck (235693) Boyd Creek (219738) • North Fork Fuller Creek (229676) South Fork Fuller Creek (235005) Haupt Creek (225023) • Tobacco Creek (236406) Elk Creek (223108) • )`louse Creek (225688): Soda Spring Creek (234845) Allen Creek (218142) Peppeawood Creek (230514): • Danfield Creek (222007): • Cow Creek (221691) • Jim Creek (226237) • Grasshopper Creek (224470) Britain Creek (219851) • Cedar Creek (220760) • Wolf Creek (238086) • Tombs Crock (236448) • Marshall Creek (228139): • McKenzie Creek (228391) Northern Sonoma Coast Watercourses which feed into the Pacific Ocean in Sonoma County between the Gualala and Russian Rivers, numbered from north to south: 1.