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Natural Riparian Resources

Natural Riparian Resources. Water. Erosion/Deposition. Vegetation. 1) Riparian-wetland area is saturated at or near the surface or inundated in “relatively frequent” events. 1. Riparian-wetland area is saturated at or near the surface or inundated in “relatively frequent” events.

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Natural Riparian Resources

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  1. Natural Riparian Resources Water Erosion/Deposition Vegetation

  2. 1) Riparian-wetland area is saturated at or near the surface or inundated in “relatively frequent” events

  3. 1. Riparian-wetland area is saturated at or near the surface or inundated in “relatively frequent” events Purpose: Document that inundation or saturation is Long enough in duration Occurs frequently enough To maintain riparian-wetland characteristics

  4. Inundation Soil saturation Watermarks Drift lines Sediment deposits Drainage patterns Oxidized rhizospheres Water-stained leaves Vegetation HYDROLOGIC INDICATORS Corps of Engineers Wetlands Delineation Manual, Page 32 https://www.nwo.usace.army.mil/html/od-r/87-manual.pdf

  5. Normal High-water Mark (Water Stain on Rock) Normal High-water (Change in Vegetation)

  6. 2) Fluctuation of water levels is not excessive

  7. 2. Fluctuation of water levels is not excessive Purpose: Determine if water level changes are within limits that will sustain riparian-wetland vegetation

  8. YELLOWSTONE HGM SITE #4 JULY 27,1999 JUNE 10,1999 SEPTEMBER 22,1999

  9. Ochoco Reservoir

  10. 3) Riparian-wetland area is enlarging or has achieved potential extent

  11. 3. Riparian-wetland area is enlarging or has reached potential extent Purpose If degradation has occurred, determine if riparian area is Recovering Recovered or is at potential extent

  12. Sonoma Lake, Nevada

  13. Kissler Spring, NV

  14. 4) Upland watershed is not contributing to riparian- wetland degradation

  15. 4. Upland watershed is not contributing to riparian-wetland degradation Purpose: Determine if there has been a change in water or sediment being delivered to the riparian-wetland area Is the change causing degradation?

  16. Spring in Ephemeral Wash

  17. 5) Water quality is sufficient to support riparian- wetland plants

  18. 5. Water quality is sufficient to support riparian-wetland plants Purpose: Determine if water quality is being maintained Allowing the site to produce the kind of vegetation necessary to function properly

  19. Montana Saline Seep

  20. 6) Natural surface or subsurface flow patterns are not altered by disturbance (i.e.., hoof action, dams, dikes, trails, roads, rills, gullies, drilling activities)

  21. 6. Natural surface and subsurface flow patterns are not altered by disturbance (i.e., hoof action, dams, dikes, trails, roads, rills, gullies, drilling activities) Purpose: Determine if surface or subsurface flow patterns are being maintained

  22. Lacustrine Wetland - New Mexico

  23. 7) Structure accommodates safe passage of flows (e.g., no headcut affecting dam or spillway)

  24. 7. Structure accommodates safe passage of flows (e.g., no headcut affecting the dam or spillway Purpose: If a structure has been constructed to capture more runoff and create a more permanent or larger wetland, determine if the outlet structure provides safe passage of flows

  25. Boulder Reservoir Spillway, WY

  26. Prairie Pothole Wetland - Montana

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