Applying Stream Buffer Science to the Lake George Watershed Lake George Stream Corridor Management...
Transcript of Applying Stream Buffer Science to the Lake George Watershed Lake George Stream Corridor Management...
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Applying Stream Applying Stream Buffer Science to Buffer Science to the Lake George the Lake George
WatershedWatershedLake George Stream Corridor Lake George Stream Corridor Management Stakeholder Management Stakeholder
MeetingMeeting
May 28, 2008May 28, 2008
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Unique Considerations in Unique Considerations in the Lake George Watershedthe Lake George Watershed Lake George as a ResourceLake George as a Resource Streams of the Lake George Streams of the Lake George
WatershedWatershed Regulatory EnvironmentRegulatory Environment Growth/ Land UseGrowth/ Land Use Key DecisionsKey Decisions
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Lake George is an Lake George is an Exceptional ResourceExceptional Resource
"...without comparison, the most beautiful water I ever saw..."Thomas Jefferson on Lake George, May 1791
Source: HighhlinerFishing.com
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Value of the Lake Value of the Lake to the Communityto the Community
FishingFishing Unfiltered Water Unfiltered Water
SupplySupply TourismTourism Water Clarity/ Water Clarity/
RecreationRecreation“…cool, crystal clear lakes–surrounded by towering mountains and miles upon milesof unspoiled wilderness.”Visitlakegeorge.com
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Streams of Lake GeorgeStreams of Lake George Lake George has 132 Lake George has 132
streams in its 230- streams in its 230- square mile square mile watershed.watershed.
These streams are These streams are primarily very small, primarily very small, high quality, forested high quality, forested tributaries.tributaries.
Annually, 56% of the Annually, 56% of the water budget is water budget is carried to the lake as carried to the lake as surface runoff through surface runoff through streams *streams *
Source: HistoricLakes.org
(Source: Shuster, L., R. LaFleur and C. Boylen. 1994. The Hydrologic Budget of Lake (Source: Shuster, L., R. LaFleur and C. Boylen. 1994. The Hydrologic Budget of Lake George, Southeastern Adirondack Mountains of New York. Northeastern Geology, George, Southeastern Adirondack Mountains of New York. Northeastern Geology, 16(2): 94-108)*16(2): 94-108)*
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Water Clarity*Water Clarity*
Source: Boylen, J., E. Howe, J. Bartkowski and L. Eichler. 2004. Augmentation of a Source: Boylen, J., E. Howe, J. Bartkowski and L. Eichler. 2004. Augmentation of a Long-Term Monitoring Program for Lake George, NY by Citizen Volunteers. Long-Term Monitoring Program for Lake George, NY by Citizen Volunteers. In Lake and Resource Management, 20(2) 121-129. In Lake and Resource Management, 20(2) 121-129.
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Water Quality Concerns in Water Quality Concerns in the Lakethe Lake
Lake and its Lake and its tributaries tributaries impaired for impaired for sediment (New sediment (New York State DEC)York State DEC)
South Basin is South Basin is mesotrophic, mesotrophic, affected by affected by development in development in this portion of the this portion of the watershed.watershed.Source: Boylen, J., E. Howe, J. Bartkowski and L. Eichler. 2004. Augmentation of a Source: Boylen, J., E. Howe, J. Bartkowski and L. Eichler. 2004. Augmentation of a
Long-Term Monitoring Program for Lake George, NY by Citizen Volunteers. Long-Term Monitoring Program for Lake George, NY by Citizen Volunteers. In Lake and Resource Management, 20(2) 121-129. In Lake and Resource Management, 20(2) 121-129.
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Streams of Lake George*Streams of Lake George*
Most Streams “Not Most Streams “Not Impacted” or “Slightly Impacted” or “Slightly Impacted” for Impacted” for macroinvertebratesmacroinvertebrates
Impacted streams Impacted streams downstream of downstream of developed areasdeveloped areas
Some stream show Some stream show water quality water quality differences between differences between downstream and downstream and upstream locationsupstream locations
(Source: Draft Annual Assessment, Stream Assessment, 2007, Lake George Water Keeper)*(Source: Draft Annual Assessment, Stream Assessment, 2007, Lake George Water Keeper)*
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Existing Buffers of Lake Existing Buffers of Lake George - IGeorge - I
Source: D. Keppler
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Existing Buffers of Lake Existing Buffers of Lake George - IIGeorge - II
Source: D. Keppler
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Existing Buffers of Lake Existing Buffers of Lake George - IIIGeorge - III
Source: D. Keppler
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Existing Buffers of Lake Existing Buffers of Lake George - IVGeorge - IV
Source: D. Keppler
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Some Water Quality Some Water Quality Concerns in the Streams of Concerns in the Streams of
Lake GeorgeLake George Some Impaired Some Impaired
Streams*Streams* Finkle BrookFinkle Brook Foster BrookFoster Brook East BrookEast Brook West BrookWest Brook Prospect Mountain BrookProspect Mountain Brook English BrookEnglish Brook Huddle BrookHuddle Brook Indian BrookIndian Brook Hague BrookHague Brook
* Source: New York State * Source: New York State Draft 303 (d) List of 2008Draft 303 (d) List of 2008
Source: Lake George Association
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Land Use in the Land Use in the Lake George WatershedLake George Watershed
Large amount of the Large amount of the watershed is state-ownedwatershed is state-owned
Much of the land is zoned Much of the land is zoned very low densityvery low density
Specific areas selected Specific areas selected for more intense for more intense developmentdevelopment
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Regulatory Authority in the Regulatory Authority in the Lake George WatershedLake George Watershed
Towns and Towns and VillagesVillages
Lake George Park Lake George Park CommissionCommission
Adirondack Park Adirondack Park AgencyAgency
New York State New York State DECDEC
Federal AgenciesFederal Agencies
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Major Goals for Lake Major Goals for Lake George Stream BuffersGeorge Stream Buffers
Temperature Temperature Water quality (phosphorus)Water quality (phosphorus) Sediment (filtering and erosion Sediment (filtering and erosion
prevention)prevention) HabitatHabitat
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Key Technical DecisionsKey Technical Decisions
Streams to include Streams to include Buffer widthBuffer width How to measure the widthHow to measure the width Management within the bufferManagement within the buffer Stream crossingsStream crossings Waivers/ exceptionsWaivers/ exceptions
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Decision 1: What is a Decision 1: What is a Stream?Stream?
Base stream layer from SWCD Base stream layer from SWCD mappingmapping
Should other streams be added?Should other streams be added? Different treatment of perennial Different treatment of perennial
versus intermittent streams?versus intermittent streams? On-site stream identification?On-site stream identification? Other criteria for non-mapped Other criteria for non-mapped
streams?streams?
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Decision 2: Buffer Decision 2: Buffer WidthsWidths
20’ to 200’ typical buffer 20’ to 200’ typical buffer widthswidths
Lake George primarily has Lake George primarily has fairly small (1fairly small (1stst and 2 and 2ndnd order streams)order streams)
Extremely high quality Extremely high quality resourceresource
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Decision 3: Vary Widths?Decision 3: Vary Widths?
Perennial versus intermittentPerennial versus intermittent Large versus small streamsLarge versus small streams Expand buffer to include:Expand buffer to include:
FloodplainsFloodplains Habitat areasHabitat areas WetlandsWetlands Steep slopesSteep slopes
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Decision 4: Decision 4: How to Measure the BufferHow to Measure the Buffer
Stream CenterlineStream Centerline
Edge of Stream?Edge of Stream?
High Water Mark?High Water Mark?
Other?Other?
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Decision 5: Management Decision 5: Management Within the BufferWithin the Buffer
Mature vegetation throughoutMature vegetation throughout
Mix of managed and mature Mix of managed and mature vegetationvegetation
Setback from structures only?Setback from structures only?
Three-zone buffer?Three-zone buffer?
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Decision 6: Stream Decision 6: Stream CrossingsCrossings
How many should be allowed per How many should be allowed per stream mile?stream mile?
Design criteriaDesign criteria
Other considerations?Other considerations?
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Decision 7: Exceptions or Decision 7: Exceptions or Waivers?Waivers?
Small lotsSmall lots
Previously Previously developed areasdeveloped areas
Stormwater Stormwater practicespractices
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Plan for the Rest of the Plan for the Rest of the DayDay
Break (about 15 minutes)Break (about 15 minutes)
Technical questionsTechnical questions
Comments/ feedback for buffer Comments/ feedback for buffer regulationsregulations