Flood Risk Profile South Beach - Sfport
Flood Risk ProfileSouth BeachSubarea 3-1Subarea DescriptionSouth Beach (Subarea 3-1) includes the waterfront area just south of the Bay Bridge crossing and stretches to the northernshore of Mission Creek at China Basin. This subarea contains a portion of the South of Market (SoMa) neighborhood, with4th Street being the southern boundary. South Beach is home to historic buildings, piers, South Beach Harbor, parks,affordable housing developments, and city and regional assets important for disaster response. Along the shoreline, theSouth Beach waterfront has piers with a variety of berths to allow for temporary and longer-term docking and harborservices, water recreation visitor berths and South Beach Marina, Bay excursions, a water-taxi landing, andinactive/reserve berths as well as four public access locations with water access. There are two affordable housingdevelopments, Steamboat Point and Delancey Street Apartments, located across the Embarcadero roadway from SouthBeach Marina and Brannan Street Wharf, respectively. Oracle Park, the San Francisco Giants ballpark, is a significantcommunity resource and economic generator. The Oracle Park Ferry Terminal in this location provides water-transitservice on game days from throughout the Bay area.The subarea shoreline is entirely engineered, and without the protection of the piers, most of the shoreline would be in awave hazard zone. Winter storms with large waves have damaged the piers and shoreline, and under existing conditionsthe wave hazards are greatest between the Bay Bridge and the Pier 40 breakwaterThe primary flooding pathway is overtopping along the shoreline. Overtopping first occurs over several stretches of theEmbarcadero shoreline (not including piers), impacting the Embarcadero roadway and immediate inland areas. Floodingalso comingles with the adjacent Subarea 2-2. Flooding also enters Subarea 3-1 from the adjacent Subarea 3-2 via a floodpathway on Berry Street near the Peter R. Maloney Bridge (4th St Bridge). Higher Bay water levels would result inovertopping along most of the shoreline, allowing floodwaters to extend several streets inland.Basemap Credits (all maps): Mapbox, OpenStreetMapWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 1 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Assets and LandmarksMaritime1.2.3.4.5.6.7.8.9.Pier 26Pier 26 AnnexPier 28Pier 30/32 ParkingBrannan Street WharfPier 38 (out of service)Water Taxi Dock (Pier 40)South Beach HarborInternational Longshoreman andWarehouse Union Hall (Seawall Lot 334)10. Seawall Lot 32811. Seawall Lot 32912. 200-Bed Homeless Navigation Center(Seawall Lot 330)13.14.15.16.17.18.19.23.Seawall Lot 331Seawall Lot 332Seawall Lot 333-NSeawall Lot 333-SSeawall Lot 334Seawall Lot 335San Francisco Giants Baseball Park (SeawallLot 336)Seawall Lot 336-1South Beach Harbor Underground StorageTank (2,000 gal.)Oracle Park Above & Belowground StorageTank (21,320 gal.)WETA Ferry Terminal (Oracle Park)30.31.32.33.34.35.36.EFWS suction connections (6)EFWS cisterns (3)EFWS Pump Station 1Large Vessel Berth (Pier 30-32)Small Boat Berth (South Beach Harbor)Fire Department HeadquartersThe Embarcadero20.21.22.Disaster Response7.23.24.25.26.27.28.29.Water Taxi (Pier 40)Oracle Park Ferry TerminalAssembly Area and Staging Area (Pier 30-32)Assembly Area (Seal Plaza)Staging Area (Seawall Lot 328, 330)Assembly Area (South Beach Park)Assembly Area (Brannon Street Wharf)EFWS Fireboat Manifolds (2)Transportation36. The Embarcadero37. Muni E-Line38. Muni T-Line39. SFMTA King Street SubstationUtilitiesWater40. Bay Bridge Pump Station (conveys water to Treasure Island)Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 2 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Assets and LandmarksWastewater41. Brannon Street Tunnel42. North Point Main - Moscone Tunnel43. Combined Sewer Discharge Outfalls (2)Power44. Moscone SubstationOpen Space and EcologyOpen Space5.8.27.45.46.Brannan Street WharfSouth Beach HarborSouth Beach ParkBay TrailBay Water Trail Launch (Pier 40 launch)47.48.49.50.51.Giant’s PromenadeEmbarcadero PromenadePublic fishing pier (Pier 42)Willie Mayes Plaza (paved plaza)South ParkWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 3 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Timing of Exposure: Assets and LandmarksTimingAssets / OPC1-in200High tide 66” SLR 2150 2150214321062086100-YR 26” SLR 21502116207320612053High tide 77” SLR 2150 2150 215021162095100-YR 37” SLR 21502145209220752064Flood EquivalentScenarioEventsMaritime Brannan Street WharfSouth Beach HarborSeawall Lot 328Seawall Lot 329200-Bed HomelessNavigation Center (SeawallLot 330)Seawall Lot 331Seawall Lot 332Seawall Lot 333-NSeawall Lot 333-SSouth Beach HarborUnderground Storage Tank(2,000 gal.)Pier 26Pier 26 AnnexPier 28Pier 30/32 (Parking)Pier 38 (out of service)Water Taxi Dock (Pier 40)InternationalLongshoreman andWarehouse Union Hall(Seawall Lot 334)Seawall Lot 334Seawall Lot 335San Francisco GiantsBaseball Park (Seawall Lot336)Seawall Lot 336-1Oracle Park Above &Belowground Storage Tank(21,320 gal.)WETA Ferry Terminal(Oracle Park)66”(11.8 ft.NAVD)77”(12.7 ft.NAVD)Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 4 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Timing of Exposure: Assets and LandmarksTimingAssets / OPC1-in200 21502070204720382034TodayTodayTodayTodayToday 21502144209120742063TodayTodayTodayTodayTodayHigh tide 66” SLR 2150 2150214321062086100-YR 26” SLR 21502116207320612053High tide 77” SLR 2150 2150 215021162095100-YR 37” SLR 21502145209220752064 108”--------------------------Flood EquivalentScenarioEventsDisaster Response EFWS Suction Connections(2 of 6)12”(7.3 ft.NAVD)EFWS Pump Station 136”(9.3 ft.NAVD)Staging Area (Seawall Lot328, 330)Assembly Area (BrannanStreet Wharf)EFWS Fireboat ManifoldEmbarcadero RoadwayAssembly and Staging Area(Pier 30,32)Assembly Area (Seal Plaza)Assembly Area (SouthBeach Park)WETA Ferry Terminal(Oracle Park)Water Taxi Dock (Pier 40)EFWS Cisterns (3)Fire DepartmentHeadquartersLarge Vessel Berth (Pier30-32)Small Boat Berth (SouthBeach Harbor)Fire DepartmentHeadquarters66”(11.8 ft.NAVD)77”(12.7 ft.NAVD)High tide 12” SLR1-YR 0” SLRHigh tide 36” SLR50-YR 0” SLRWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 5 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Timing of Exposure: Assets and LandmarksTimingAssets / LandmarksFlood LikelyUSACEHighOPC1-in200 21502112207020592051TodayTodayTodayTodayToday 2150 2150 215021212100 2150 2150210520832069Utilities Combined Sewer DischargeOutfalls (2)24”(8.3 ft.NAVD)Bay Bridge Pump Station84”(13.3 ft.NAVD) Moscone Substation Brannon Street TunnelNorth Point Main Moscone TunnelChannel Transport /Storage Box High tide 24” SLR5-YR 0” SLRHigh tide 84” SLR100-YR 44” SLR 108”--------------------------High tide 66” SLR 2150 2150214321062086100-YR 26” SLR 21502116207320612053 2150 2150 215021402119 2150 2150214621082087Transportation The EmbarcaderoMuni E-lineMuni T-LineMuni Stops (4 of 27)SFMTA King StreetSubstation66”(11.8 ft.NAVD)Regional Bus Stops (1 of 4)108”(15.3 ft.NAVD)High tide 108” SLR100-YR 66” SLRWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 6 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Timing of Exposure: Assets and LandmarksTimingAssets / OPC1-in200High tide 66” SLR 2150 2150214321062086100-YR 26” SLR 21502116207320612053 2150 2150 215021162095 21502145209220752064Flood EquivalentScenarioEventsOpen Space and Ecology Bay TrailBrannan Street WharfEmbarcadero PromenadeSouth Beach HarborSouth Beach ParkSouth Park66”(11.8 ft.NAVD) Giants PromenadePublic Fishing Pier (Pier 42)Willie Mays Plaza77”(12.7 ft.NAVD)High tide 77” SLR100-YR 37” SLRWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 7 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Timing of Exposure: ShorelineTimingAdaptationFocusShorelineTypeFlood ScenarioImmediate----Engineered66”(11.8 ft. NAVD)Tipping PointLong Term 2050Engineered77”(12.7 ft. NAVD)Return--High tide 66” SLR100-YR 26” SLRHigh tide 77” SLR100-YR 37” n200--------------- 2150 2150214321062086 21502116207320612053 2150 2150 215021162095 21502145209220752064Flood ProgressionSubstantial Flood Risk (Tipping Point)Water Level: 11.8 ft-NAVD MHHW 66” SLR100-YR 26” SLRWaterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 8 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Long-Term Flood Risk ( 2050)Water Level: 12.7 ft-NAVD MHHW 77” SLR100-YR 37” SLRThe following describes the progression of potential extreme tide and sea level rise flooding, along with a brief discussionof the assets that will be impacted within Subarea 3-1.FloodScenarioHigh tide 12” SLRWater LevelElevation:7.3 ft. NAVD88Assets1-YR 0” SLRConsequencesUSACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200TodayTodayTodayTodayTodayDisaster ResponseTwo fire suction connections (part of the Emergency Firefighting Water System,EFWS) that allow fire engines to draw water from the Bay for fire suppression areinundated. Suction connections become unusable if they are inundated, primarilydue to limitations related to fire truck access.Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 9 of 15
Flood Risk ProfileSouth BeachSubarea 3-1FloodScenarioHigh tide 24” SLRAssets5-YR 0” SLRWater LevelElevation:8.3 ft. NAVD88ConsequencesUSACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200TodayTodayTodayTodayTodayDisaster ResponseFour additional fire suction connections would be inundated.UtilitiesThe higher Bay water levels may reduce the gravity-driven flow of excess combinedwastewater and stormwater from the transport / storage boxes to the Bay. Thisimpact is only of concern during intense and prolonged rainfall events that exceedthe capacity of the large underground transport / storage boxes that ring the city.This could result in an increase in localized flooding in low-lying areas.High tide 36” SLR50-YR 0” SLRWater LevelElevation:9.3 ft. NAVD88USACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200TodayTodayTodayTodayTodayDisaster ResponseEWFS Pump Station 1 is impacted.High tide 48” SLR100-YR 8” SLRWater LevelElevation:10.2 ft.NAVD88--High tide 52” SLR100-YR 12” SLRWater LevelElevation:10.6 ft.NAVD88--USACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:20020942050203420262024USACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:20021452068204520372033------Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 10 of 15
Flood Risk ProfileSouth BeachSubarea 3-1FloodScenarioHigh tide 66” SLRWater LevelElevation:11.8 ft.NAVD88Assets100-YR 26” SLRConsequencesUSACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200 21502116207320612053MaritimeThis water level results in inundation of several Seawall Lots adjacent to the Bayshoreline. This includes Seawall Lots 328, 329, 330, 331, 332, 333-N, and 333-S.Seawall Lot 330 holds a 200-bed Homeless Navigation Center. Seawall Lot 333 (alsoknown as Site K) is owned by the San Francisco Redevelopment Agency and occupiesapproximately 1.4 acres located at 1 through 59 1/2 Townsend Street in SanFrancisco. The site was created by placing soil and construction debris from the 1906earthquake placed over open Bay water, mudflats, and wetlands to createdevelopable land by 1913.Inundation of the Embarcadero roadway at this scenario limits landside access tomost piers (except those south of Pier 40).South Beach Harbor and the Brannan Street Wharf are also impacted. South BeachHarbor is a marina that contains the Yacht Club and Harbormaster offices. A 2,000gallon underground storage tank is also impacted due to inundation of South BeachHarbor. The Brannan Street Wharf contains open space for recreational use.Disaster ResponseSeveral disaster response assets are impacted, including the Staging Area at SeawallLot 328 and 330 and the Assembly Area at the Brannan Street Wharf.The Embarcadero roadway along the shoreline is inundated.Two EFWS Fireboat Manifolds at the shoreline edge are impacted.Fire boats may still be able to make a secure connection to the manifold even if it isinundated. If the fire boats cannot make a connection, and the emergencyfirefighting water system loses pressure, the system may become unusable.UtilitiesStreetlights would experience inundation.Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 11 of 15
Flood Risk ProfileSouth BeachSubarea undation of the shoreline adjacent to the Embarcadero roadway will result insignificant disruption to city mobility and public transportation. The Historic streetcarMuni E-Line, Muni T-Line and several Muni stops along the Embarcadero roadway willbe impacted.The SFMTA King Street Substation is also inundated.Open Space and EcologyA portion of the Bay Trail, public space at the Brannan Street Wharf, South BeachHarbor, South Beach Park, and South Park will experience inundation during thisscenario. The Brannan Street Wharf park is a 57,000 square foot public park parallelto the Embarcadero Promenade that reaches out into the Bay.High tide 77” SLRWater LevelElevation:12.7 ft.NAVD88100-YR 37” SLRUSACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200 21502145209220752064MaritimeAdditional Seawall Lots near McCovey Cove will be inundated, including Seawall Lots334, 335, 336, and 336-1. The International Longshoreman and Warehouse UnionHall is located on Seawall Lot 334. The San Francisco Giants ballpark, located onSeawall Lot 336, is the sports stadium primarily used for the San Francisco Giantsprofessional baseball team.Additional piers become inundated, including Pier 26 (parking and storage), Pier 26Annex (offices), Pier 28, Pier 30/32 (parking), Pier 38 (out of service), and Pier 40(Water Taxi Dock). Pier 40 provides access to some of the most iconic views along theSan Francisco Waterfront.The Oracle Park Ferry Terminal is also inundated, impacting transit to and from theSan Francisco Giants ballpark during games. A large 21,320 gallon above andbelowground storage tank near the ballpark may be impacted.Disaster ResponseAdditional disaster response assets are inundated, including the Assembly andStaging Area on Pier 30/32, the Assembly Areas at Seal Plaza and South Beach Park,the Oracle Park Ferry Terminal, and the Water Taxi Dock at Pier 40.Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 12 of 15
Flood Risk ProfileSouth BeachSubarea 3-1FloodScenarioAssetsConsequencesOpen Space and EcologyGiants Promenade and Wille Mays Plaza are inundated.Public fishing at Pier 42 will also be impacted.High tide 84” SLR100-YR 44” SLRWater LevelElevation:13.3 ft.NAVD88USACE Int.OPC MostLikelyUSACE HighOPC 1:200 2150 2150210520832069UtilitiesThe Bay Bridge Pump Station could be inundated, preventing the delivery of potablewater to Treasure Island.High tide 96” SLR100-YR 56” SLRWater LevelElevation:14.3 ft.NAVD88--High tide 108” SLR100-YR 68” SLRWater LevelElevation:15.3 ft.NAVD88USACE LowUSACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200 2150 2150212620962078USACE LowUSACE Int.OPC MostLikelyUSACE HighOPC 1:200 2150 2150214621082087---TransportationOne regional bus stop for Golden Gate Transit is inundated. This bus stop is locatedon 4th Street near Perry Street.Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 13 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Adaptation Focus: Tipping PointWater Level: 11.8 ft-NAVD MHHW 66” SLR100-YR 26” SLRArea ne Depth(ft)Length(ft)Engineered11.4 ft.NAVD0.30.6909Timing of Impact OPC1-in2005.8% 21502116207320612053Flood Pathways Overtopping occurs over a several stretches of the Embarcadero shoreline (not including piers), resulting inflooding of multiple transit routes. Within this subarea, the shoreline adjacent to either side of Pier 30/32 andPier 38 is overtopped.The Embarcadero roadway acts as a conduit to convey flooding across this subarea and Subarea 2-2.Flooding from Subarea 3-2 also flows into this subarea near the Peter R. Maloney Bridge (4th Street Bridge) viaBerry Street. This flood pathway from Subarea 3-2 only results in minor flooding within this subarea.Shoreline Focus Addressing overtopping along from the Pier 26 Annex to Pier 40 will reduce flooding in this subarea (during thisscenario); however, additional measures are also required the adjacent subareas.Adaptation Considerations Adaptation measures to reduce flood risk are required across the adjacent subareas in tandem.Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 14 of 15
Flood Risk ProfileSouth BeachSubarea 3-1Adaptation Focus: Long-Term 2050Water Level: 12.7 ft-NAVD MHHW 77” SLR100-YR 37” SLRArea ne Depth(ft)Length(ft)Engineered12.3 ft.NAVD0.51.814,275Timing of Impact OPC1-in20091.1% 21502145209220752064Flood Pathways Overtopping occurs over most of the Embarcadero shoreline, including most piers, resulting in flooding ofmultiple transit routes and the assets within this subarea.The Embarcadero roadway acts as a conduit to convey flooding between the adjacent subareas.Flooding extends across Subareas 2-2 and 3-2.Shoreline Focus Subarea wide shoreline adaptation measures are required.Adaptation Considerations Adaptation measures to reduce flood risk are required over most of the Embarcadero shoreline, as well as theshoreline of the adjacent Subareas (2-2 and 3-2).Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 15 of 15
SFMTA King Street Substation Utilities Water 40. Bay Bridge Pump Station (conveys water to Treasure Island) Flood Risk Profile South Beach . Waterfront Resilience Program Subarea 3-1 Flood Risk Profile Page 11 of 15 Flood Scenario Assets Consequences High tide 66" SLR 100-YR Flood Risk Profile South Beach Subarea 3-1
Financial Management of Flood Risk isbn 978-92-64-25767-2 21 2016 03 1 P Financial Management of Flood Risk Contents Chapter 1. Introduction: The prevalence of flood risk Chapter 2. Flood risk in a changing climate Chapter 3. Insuring flood risk Chapter 4. Improving the insurability of flood risk C
1) The HEC-RAS provides the flood profile for the worst flood intensity. This profile will facilitate to adopt appropriate flood disaster mitigation measures. 2) The flood profiles for different flood intensities with different return periods can be plotted at any given cross section of river. Also, such flood
each FRM Planning cycle will take. FRM Strategies will cover three of these cycles. Timeline of FRM Act Baseline appraisal of current flood risk Opportunities for Natural Flood Management Prioritisation of actions Consultation on FRM Strategies FRM Act 2009 National Flood Assessment Dec 2011 Flood hazard and flood risk maps FRM Strategies 2015 .
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Salisbury Beach is a complex barrier beach system, comprised of coastal beach, coastal dunes and salt marsh. Within the Salisbury Beach barrier beach system is the Salisbury Beach State Reservation, which is managed by DCR. The Salisbury Beach State Reservation is concentrated at the southern end of Salisbury Beach adjacent to the
2. Marina "Mother's" Beach 3. Venice Beach No D.J.'s will be allowed at the following locations: 1. Dockweiler 2. Marina "Mother's" Beach 3. Venice Beach 4. Manhattan Beach 5. Redondo Beach 6. Torrance Beach Manhattan Beach Amplified sound approved by the Department of Beaches and Harbors must also
understand and predict. Nearly every community in Nebraska that faces flood risk has had a study conducted to predict the characteristics of a 1% annual chance flood (100-year flood). The Flood Insurance Study and the associated Flood Insurance Rate Map are the best sources of information. The data in these documents mixed with the
Answer Key A Beast / Post-Reading / Activity 1 Hand out the worksheets to your students. Ask them to draw and describe the beast. When they finish, ask the students to walk around the class, find a partner, and then show and say what they have written. Display their worksheets on the bulletin board. Possible answer: The beast has got a very long body with brown spots A Beast / Post-Reading .
