U.S. Department of the Interior U.S. Geological Survey Bathymetric & Bird Surveys Ponds 9 & 10, Wash Ponds, and Napa Plant Site U.S. Geological Survey
Acknowledgements USGS Western Ecological Research Center USGS Priority Ecosystem Studies, SF Bay Program California Department of Fish and Game – Karen Taylor, Tom Huffman, Mike Sipes, Larry Wyckoff, Stacy Martinelli Wildlife Conservation Board - Bonnie Turner, Tony Chappelle Ducks Unlimited – Renee Spenst, Steve Carroll, Austin Payne, Russell Lowgren, Fritz Reid, Ron Galindo State Coastal Conservancy – Amy Hutzel, Nadine Hitchcock, Betsy Wilson SF Bay Joint Venture - Beth Huning, Christina Sloop GAIA Consulting, Inc. - Susanne von Rosenberg Cargil Salt - Butch Paredes Bathy / Bird Field Support - Joel Shinn, Tanya Graham, Erin Flynn, Chris Potter, Laura Hollander, and Jeff Leichty
Bathymetric Survey Overview Goal: Collect baseline elevation data for Napa Plant Site, Wash ponds, & Ponds 9&10 With future surveys we can document geomorphological changes that have occurred since restoration of tidal flow
Bathymetry Survey Methods Pelican Case with Navisound RTK Antenna Console with laptop & RTK Transducer
Bathymetry Survey Methods 100m transects Ponds 9 & 10 Wash Ponds
Bathymetry Survey Methods 200m transects
Ponds 9 & 10 ~ Current Elevation Mean elevation: 0.71 ± 0.40m (mean ± SE) Elevation Range: to 1.55m
Wash Ponds ~ Current Elevation Mean elevation: 1.06 ± 0.26m Elevation Range: to 1.66m
NPS ~ Current Elevation Mean elevation: 0.84 ± 0.31m Elevation Range: to 1.65m
Low Tide Bird Surveys
Low Tide Bird Surveys – Small Shorebirds Pond 910 BreachCRYST breachWASH Breach
Low Tide Bird Surveys – Medium Shorebirds Pond 910 BreachCRYST breachWASH Breach
Low Tide Bird Surveys – Ducks Pond 910 Breach CRYST breachWASH Breach Dabbling DucksDiving Ducks CRYST breach Pond 910 Breach WASH Breach
Low Tide - Crystallizers
Low Tide – WASH ponds
High Tide Bird Surveys – Shorebirds Small ShorebirdsMedium Shorebirds
High Tide Bird Surveys – Ducks Diving DucksDabbling Ducks
Questions?