Managed Tidal Marshes Create 'managed' tidal marshes with levees and water control structures, specifically at Lower Tubbs and Haire Ranch. This could be a long term strategy if restoring hydrology to Lower Tubbs does not work. Both Other Enhance Migratory Bird Habitat Migratory shorebird habitat enhancement in managed ponds. Mudflats should be plentiful and provide enough habitat for shorebirds. Long Public access Programmatic Planning for Public Access Programmatic planning for public access Both Remove barriers to marsh migration 37, Petaluma River & Mare Island Raise Highway 37 between Petaluma River and Mare Island. The activity would be to lobby for a causeway and work with CalTrans to target key locations where Both
Restore transition zone Flexible Transition Zone Restoration High Medium Medium High High Medium Improve tidal hydrology Improve Hydrology, Strip Marsh East High High High High High High Restore transition zone Marsh-Upland Transition Zone Plant Restoration High Medium Medium High High High Increase land elevation Raise Elevation of Agricultural Land, Sears Point & Petaluma River High Low Low High High Medium Increase land elevation Beneficial Reuse, Cullinan High High Medium Low Low Medium Increase hydrological connectivity Create Tidal Connections 37: Strip Marsh High Medium Medium Low, unless not completed High Medium Improve tidal hydrology Improve Hydrology, Lower Tubbs High High High Low, unless not completed High High Improve hydrology Improve Hydrology Strip Marsh West High High High Low, unless not completed High Medium Increase hydrological connectivity Create Tidal Connections 37: Sears Point Medium Medium Medium High High Low
Public access Programmatic Planning for Public Access Medium Medium High Medium Medium High Wildlife management Remove Predator Perches Medium Medium High Medium Medium High Increase land elevation Thin Layer Sediment Deposition Medium Medium Medium High High Medium Remove barriers to marsh migration Remove/Realign railroads Medium Low Medium High High Medium Increase land elevation Sediment Passive Distribution Medium Low Medium High High Medium Increase land elevation Freshwater/Brackish Marsh Creation Low Low Medium Low Low High Improve tidal hydrology Improve Hydrology, Figueras Low Low High Medium Medium High Managed Tidal Marshes Low Low Low Low Low Low Vegetation management Treated Wastewater Use Low Low Medium Low Low Low Other Enhance Migratory Bird Habitat Long Term Only Long Term Only Long Term Only Low Low Medium Other on Intertidal Long Term Only Long Term Only Long Term Only Low Low Low
Restore marsh hydrology Tidal Marsh Restoration, East Cullinan 0.105 0.093 0.062 0.018 0.000 0.193 0.471 7 Very High High Public access Programmatic Planning for Public Access 0.063 0.049 0.052 0.054 0.038 0.211 0.467 8 Medium Medium Create high tide refuge Marsh Mounds, Enhance Transition Zone 0.012 0.105 0.115 0.033 0.000 0.171 0.437 9 High High Restore tidal marsh hydrology Tidal Marsh Restoration, Skaggs Island 0.127 0.107 0.068 0.051 0.000 0.082 0.435 10 High Low Remove barriers to marsh migration Remove Railroads 0.077 0.113 0.073 0.072 0.034 0.061 0.431 11 Medium Low Restore transition zone Marsh-Upland Transition Zone Plant Restoration 0.009 0.100 0.136 0.043 0.000 0.137 0.425 12 High Medium Remove barriers to migration Realign Railway 0.077 0.113 0.073 0.069 0.027 0.061 0.422 13 Merged Merged Wildlife management Remove Predator Perches 0.033 0.071 0.052 0.055 0.008 0.193 0.412 14 Medium Medium
Create high tide refuge Create High Tide Refuge 0.018 0.064 0.066 0.048 0.000 0.152 0.348 24 High High Increase land elevation Beneficial Reuse, Cullinan 0.034 0.067 0.075 0.032 0.000 0.132 0.339 25 High High Increase land elevation Sediment Passive Distribution 0.057 0.085 0.045 0.024 0.000 0.117 0.329 27 Medium Low Managed Tidal Marshes 0.145 0.068 0.031 0.008 0.000 0.063 0.315 28 Low Low Increase land elevation Non-Corps Sediment Delivery 0.024 0.064 0.068 0.038 0.000 0.089 0.282 29 High (Merged) Low Increase land elevation Thin Layer Sediment Deposition 0.034 0.079 0.045 0.024 0.000 0.091 0.274 30 Medium Medium Increase land elevation Dredge Offloading Facility 0.024 0.083 0.083 0.038 0.000 0.046 0.274 31 High (Merged) Low Increase land elevation Eliminate Deep Ocean Disposal 0.044 0.059 0.038 0.017 0.000 0.112 0.269 32 High (Merged) Low Improve tidal hydrology Improve Hydrology, Lower Tubbs 0.042 0.016 0.000 0.017 0.000 0.193 0.268 33 High High Increase land elevation Raise Elevation of Agricultural Land, Sears Point & 0.009 0.024 0.055 0.107 0.000 0.062 0.257 34 High Low
Table A2: Long term (2030 – 2100) ranks and scores from the expert elicitation rating and ranking process. Scores were normalized for each category (five ecosystems and feasibility) and weighted evenly. The total average score is the total score for a strategy, summed across all categories. The average rank is from the elicitation process. Priority and Impact represent the final tiers in which each strategy was placed after discussions. Dark green = very high tier (priority only), light green = high tier, yellow = medium tier, red = low tier. “Merged” refers to strategies that were combined with other strategies during discussion. Normalized Scores from Elicitation Category Strategy Name Subtidal / Intertidal Tidal Marsh Upland Transition Zone Migration Riparian Feasibility Total Average Score Average Rank Priority Impact Acquire land Acquire Land 0.106 0.154 0.135 0.112 0.083 0.085 0.675 1 Very High High Vegetation management Invasive Plant Early Detection and Rapid Response 0.041 0.084 0.092 0.140 0.147 0.161 0.666 2 Very High High Vegetation management Reduce Extent of Lepidium 0.006 0.103 0.107 0.124 0.132 0.161 0.634 3 Merged Merged Acquire land Move Refuge Boundaries Upland 0.061 0.148 0.135 0.111 0.064 0.111 0.630 4 Very High High Remove barriers to marsh migration Raise 37, Petaluma River & Mare Island 0.112 0.146 0.085 0.058 0.014 0.121 0.536 5 Very High High Restore tidal marsh hydrology Tidal Marsh Restoration, Skaggs Island 0.046 0.138 0.089 0.047 0.015 0.149 0.485 6 Very High High Public access Planning for Public Access 0.051 0.054 0.045 0.054 0.053 0.200 0.457 7 Medium Medium
Increase land elevation Non-Corps Sediment Delivery 0.037 0.116 0.103 0.043 0.007 0.135 0.441 8 High High Increase land elevation Raise Elevation of Agricultural Land, Sears Point & Petaluma River 0.052 0.120 0.096 0.054 0.000 0.113 0.436 9 High High Increase land elevation Dredge Offloading Facility 0.037 0.137 0.120 0.053 0.007 0.073 0.426 10 High High Increase land elevation Creation 0.067 0.090 0.077 0.039 0.000 0.146 0.419 11 Low Low Restore transition zone Marsh-Upland Transition Zone Plant Restoration 0.013 0.086 0.119 0.036 0.019 0.143 0.417 12 High High Increase hydrological connectivity Create Tidal Connections 37: Tolay Creek 0.045 0.097 0.060 0.034 0.020 0.159 0.416 13 High High Restore tidal marsh hydrology Tidal Marsh Restoration, East Cullinan 0.047 0.092 0.047 0.029 0.000 0.194 0.410 14 Low, unless not complete Medium Migration restoration Nature-based Flood Protection 0.020 0.063 0.103 0.050 0.000 0.173 0.409 15 Merged Merged Remove barriers to migration Remove Railroads 0.078 0.123 0.085 0.028 0.007 0.082 0.403 16 High High Create high tide refuge Create High Tide Refuge 0.023 0.087 0.082 0.040 0.000 0.169 0.402 17 High High Remove barriers to Realign Railway 0.078 0.123 0.085 0.028 0.007 0.061 0.382 18 Merged Merged
marsh migration Vegetation management Eradicate Spartina 0.060 0.063 0.029 0.028 0.000 0.190 0.369 19 Merged Merged Wildlife management Remove Predator Perches 0.027 0.059 0.031 0.039 0.007 0.200 0.363 21 Medium Medium Increase hydrological connectivity Create Tidal Connections 37: Strip Marsh 0.044 0.100 0.045 0.033 0.028 0.106 0.357 22 Low, unless not complete High Restore transition zone Flexible Transition Zone Restoration 0.010 0.081 0.134 0.039 0.000 0.085 0.349 23 High High Increase land elevation Thin Layer Sediment Deposition 0.033 0.070 0.035 0.044 0.028 0.133 0.342 24 High High Increase hydrological connectivity Create Tidal Connections 37: Sears Point 0.050 0.109 0.070 0.045 0.000 0.066 0.340 26 High High Increase land elevation Beneficial Reuse, Cullinan 0.026 0.077 0.079 0.031 0.000 0.104 0.317 27 Low Low Improve hydrology Improve Hydrology, Strip Marsh East 0.031 0.057 0.041 0.021 0.000 0.165 0.314 28 High High Create high tide refuge Mounds, Enhance Transition Zone 0.006 0.060 0.073 0.025 0.000 0.149 0.314 29 High High Restore transition zone Create Transition Zone Highway 37 0.006 0.039 0.070 0.035 0.019 0.144 0.313 30 Low Low Improve tidal hydrology Improve Hydrology, Figueras 0.037 0.033 0.015 0.021 0.000 0.205 0.311 31 Medium Medium