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ELKHORN SLOUGH TIDAL WETLAND PROJECTELKHORN SLOUGH TIDAL WETLAND PROJECT
Barb Peichel, Tidal Wetland Project Coordinator, Elkhorn Slough Barb Peichel, Tidal Wetland Project Coordinator, Elkhorn Slough ReserveReserveJune 14, 2007June 14, 2007
OUTLINEOUTLINE
•• Restoration Strategies A1Restoration Strategies A1--A4: Reduce A4: Reduce Habitat Erosion & Marsh LossHabitat Erosion & Marsh Loss
•• Restoration Strategies B1Restoration Strategies B1--B4: Restore & B4: Restore & Enhance Degraded Estuarine HabitatsEnhance Degraded Estuarine Habitats
1. CONSERVE HIGH 1. CONSERVE HIGH QUALITY HABITATSQUALITY HABITATS
2. RESTORE DEGRADED 2. RESTORE DEGRADED ESTUARINE HABITATS ESTUARINE HABITATS
3. RESTORE PROCESSES3. RESTORE PROCESSES
TIDAL WETLAND PROJECT GOALSTIDAL WETLAND PROJECT GOALS
Salt Marsh & Salt Marsh & Tidal CreeksTidal Creeks
796 acres796 acres
Mudflat Mudflat 1,605 acres1,605 acres
Channel & Channel & Tidal Creeks Tidal Creeks
293 acres293 acres
1870 2000
Loss of Salt Marsh Loss of Salt Marsh -- 50% (1000 acres)50% (1000 acres)
Bank Erosion~ 1.6 feet per year
Habitat & Shoreline Erosion
Tidal Creek Widening
~ 7 ft to 40 ft increase (from 1931 to 2001)
Interior Marsh Dieback
2005 1931
Marsh Loss
Interior Marsh Dieback
Estuarine Mouth ChangesEstuarine Mouth Changes
1949194919311931
Reduced Riverine SedimentsReduced Riverine Sediments
19091909 20052005
OUTLINEOUTLINE
•• Restoration Strategies A1Restoration Strategies A1--A4: Reduce A4: Reduce Habitat Erosion & Marsh LossHabitat Erosion & Marsh Loss–– EcosystemEcosystem--Based Management ProjectBased Management Project
•• Restoration Strategies B1Restoration Strategies B1--B4: Restore & B4: Restore & Enhance Degraded Estuarine HabitatsEnhance Degraded Estuarine Habitats
• Funding – Packard Foundation & Resources Legacy Fund Foundation (2/06 – 1/09)
• Purpose - Evaluate & make a decision about potential restoration alternatives to reduce marsh loss/habitat erosion using an EBM framework
EcosystemEcosystem--Based Management ProjectBased Management Project
EBM Project Leads• Ken Johnson & Judy Kildow (Monterey Bay Aquarium Research Institute)• Kerstin Wasson & Becky Christensen & Eric Van Dyke (Elkhorn Slough Reserve)• Mark Silberstein (Elkhorn Slough Foundation)• Linwood Pendleton (The Ocean Foundation)
TWP Working Group – Modeling Advisory Team• John Callaway (University of San Francisco)• Josh Collins (San Francisco Estuary Institute)• Robert Curry (CSU-Monterey Bay)• Ed Gross (Bay Modeling)• Jessie Lacy (U.S. Geological Survey)• Bryan Largay (Largay Hydrologic Sciences, LLC)• John Largier (UC-Davis)
Consulting Team• Don Danmeier, Jeff Haltiner, Matt Brennan, Steve Crooks,
Bob Battalio, Peter Goodwin (Philip Williams and Associates, Ltd.)• Ron Duke, John Bourgeois (H.T. Harvey & Associates)• Nicole Beck (2nd Nature)
EcosystemEcosystem--Based Management ProjectBased Management Project
EcosystemEcosystem--Based Management ProjectBased Management Project
Schedule of Deliverables:
• Literature Review (2/2007) • Restoration Concepts (1/2007) - SPT/SP Review• Model Calibration Report (5/2007)• Predictions of hydrodynamics, inlet stability,
morphology & habitat at years 0, 10 & 50– Alt 1. No Action (6/2007)– Alt 3. Reduce the Elkhorn entrance size/sill (7/2007)– Alt 4. Reduce the tidal influence to Parsons (7/2007)– Alt 2. Reroute the Elkhorn entrance channel (around
Bennett) & block current opening (9/2007)– Alt 5. Reroute the Elkhorn entrance channel (North
Harbor) & structure in Harbor area (9/2007)– Supplemental Actions. Fluvial sediment/cordgrass
(due 9/2007)• Conceptual Engineering Design (3/2008)• Final Project Report (3/2008)
– SPT/SP Review (ongoing & 2/2008)
EcosystemEcosystem--Based Management ProjectBased Management Project
Schedule of Deliverables:• Tide Levels & Marsh Sediment
(installed/ongoing)
• Interaction of Oxygen & Nutrient Dynamics (1/2009)
• Responses of Key Species (1/2009)
• Linking Economic Value & Analyses of Legal/Policy variables (1/2009)
• Community Involvement & Project Support (ongoing)
EcosystemEcosystem--Based Management ProjectBased Management Project
SPT/SP Review (ongoing)
DECISION – Pursue large-scale restoration to reduce habitat erosion & marsh loss in Elkhorn Slough? (1/2009)
EcosystemEcosystem--Based Management ProjectBased Management Project
OUTLINEOUTLINE
•• Restoration Strategies A1Restoration Strategies A1--A4: Reduce A4: Reduce Habitat Erosion & Marsh LossHabitat Erosion & Marsh Loss
•• Restoration Strategies B1Restoration Strategies B1--B4: Restore & B4: Restore & Enhance Degraded Estuarine HabitatsEnhance Degraded Estuarine Habitats–– Parsons SloughParsons Slough
• Funding – EPA and Coastal Conservancy (11/06 – 3/09)
• Purpose - Develop a Parsons Slough Wetland Restoration Plan
Restoration Planning for Parsons SloughRestoration Planning for Parsons Slough
2005200519311931
SCHEDULEProject Goals and Objectives (7/2007)• SPT/SP Review
Quality Assurance Project Plan (8/2007)• SPT/SP Provide Data
Existing Conditions Report (12/2007)• SPT/SP Provide Data
Sediment Additions Report (4/2008)• SPT/SP Review
Restoration Alternatives Report (5/2008)• SPT/SP Review/Make Recommendations
Restoration Planning for Parsons SloughRestoration Planning for Parsons Slough
Restoration Planning Restoration Planning for Parsons Sloughfor Parsons Slough
TWP Working Group –Parsons Restoration Team• Trish Chapman (CA Coastal Conservancy)• Cheryl McGovern (US EPA)• Becky Christensen & Andrea Woolfolk (Elkhorn Slough Reserve)• Ross Clark & Katie Morange (CA Coastal Commission)• John Krause (CA Dept. of Fish and Game)• Jim Oakden (Moss Landing Marine Laboratories)• Mary Root & Bill McIver (US Fish & Wildlife Service)• Peter von Langen (Regional Water Quality Control Board)• Lisa Windham-Myers (U.S. Geological Survey)
Consulting Team• Chris Webb & Dilip Trivedi (Moffatt & Nichol)• Noel Davis (Chambers Group, Inc.)• Roger Leventhal (FarWest Restoration Engineering)• Stuart Siegel (Wetlands and Water Resources)
THANK YOU!THANK YOU!
Elkhorn Slough Tidal Wetland Project
www.elkhornslough.org/tidalwetlandproject
