Presentation is loading. Please wait.

Presentation is loading. Please wait.

Frank’s Dump West - New Year’s Eve 2005 8.9 ft tides; 40mph westerly windsPhoto: Mark Taylor Inundation.

Similar presentations


Presentation on theme: "Frank’s Dump West - New Year’s Eve 2005 8.9 ft tides; 40mph westerly windsPhoto: Mark Taylor Inundation."— Presentation transcript:

1

2

3

4 Frank’s Dump West - New Year’s Eve ft tides; 40mph westerly windsPhoto: Mark Taylor Inundation

5 Erosion Hayward Marsh - New Year’s Eve ft tides; 40mph westerly winds Photo: Mark Taylor

6 Functions Urban Urban Habitat Habitat Storm drainage Storm drainage Land fill Land fill Wastewater Wastewater Utility corridors Utility corridors Trails Trails

7

8 Preliminary diagram: Carollo, EBDA 2011

9 Functions Urban Urban Habitat Habitat Storm drainage Storm drainage Land fill Land fill Sewage treatment Sewage treatment Utility corridors Utility corridors Trails Trails PGE EBDA line Railroad Cable HP Gas Bay trail

10 Hold the Line

11 Realign Rapid landward movement increases as sea level rises

12 Opportunities

13 Examples of remnant native lowland (alluvial) grassland and sedge-rush meadow stands in lowlands bordering the Bay.

14 Upland Ecotone Rapid landward movement increases as sea level rises MudflatTidal MarshBrackish Marsh Freshwater Swale Treated Wastewater and Stormwater Seepage Overflow Wave Attenuation

15 Upland Ecotone ::: Hargreaves Associates :::

16 162011

17 2047 Main Breaches Break up levee High marsh/transitional habitat/buffer 17

18 Demonstration Project to measure wave attenuation over a tidal marsh and mudflat. to measure wave attenuation over a tidal marsh and mudflat. Rapid landward movement increases as sea level rises MudflatTidal MarshBrackish Marsh Freshwater Swale Seepage Overflow Wave Attenuation

19 Demonstration Project to create historic transitional habitat; to create historic transitional habitat; to create buffers to sea level rise; to create buffers to sea level rise; to polish discharge by subsurface seepage. to polish discharge by subsurface seepage. Rapid landward movement increases as sea level rises MudflatTidal MarshBrackish Marsh Freshwater Swale Seepage Overflow Wave Attenuation

20

21

22

23

24

25

26

27

28 0ft1ft2ft3ft4ft Existing levees Terraced levees Terraced brackish levee Enhance existing wetlands, realign levees Lead TimeEffective Realign functions Threshold 5ft Decision An Adaptation Strategy?

29 Functions Urban Urban Habitat Habitat Storm drainage Storm drainage Land fill Land fill Sewage treatment Sewage treatment Utility corridors Utility corridors Trails Trails PGE EBDA line Railroad Cable HP Gas Bay trail

30 Questions?


Download ppt "Frank’s Dump West - New Year’s Eve 2005 8.9 ft tides; 40mph westerly windsPhoto: Mark Taylor Inundation."

Similar presentations


Ads by Google