Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
Comprehensive Lake InventoryComprehensive Lake Inventoryfor the Pleasant Lake Protective Associationfor the Pleasant Lake Protective Association
Colby-Sawyer CollegeInstitute for Community
and Environment
Mid-Project Presentation
20052005--2006 2006 CES Third Year Project TeamCES Third Year Project Team
Matt Urban Steve Hash
Loey Kenna
Carly Rademaker
AgendaAgenda
Class Activities What are Watersheds?The Inventory ExplainedA Typical Inventory QuestionWhat is GIS?Impervious Surface ExperimentPlans for the FutureQuestions and Comments
Class ActivitiesClass ActivitiesGetting Familiar with the CommunityGetting Familiar with the Community
Elkins MeetingGetting to know the people of Elkins. Understanding their concerns and desires.
HikesExploring the watershed, establishing a sense for our surroundings.
KayakingHaving a look at the lake from a different perspective. Viewing the perimeter and inlets.
Class ActivitiesClass ActivitiesLearning about the Surrounding EnvironmentLearning about the Surrounding Environment
Flora and FaunaIdentification of species within the watershedExample:
Red maple (Acer rubrum)Black bear
Macro InvertebratesStream ecology- species collection process Example:
StonefliesMayflies
Class ActivitiesClass ActivitiesData CollectionData Collection
Flow MeasurementMeasured flow and conductivity at each inlet
TidbitsMeasuring the waters temperature at different depths and graphing the results. Observing the Lake’s turnover. Tidbits were left in the water recording every five minutes for roughly 3 months.
Tidbit ChartTidbit Chart
5
7
9
11
13
15
17
19
21
23
25D
ate
9/14
/200
5
9/15
/200
5
9/15
/200
5
9/16
/200
5
9/17
/200
5
9/18
/200
5
9/18
/200
5
9/19
/200
5
9/20
/200
5
9/21
/200
5
9/21
/200
5
9/22
/200
5
9/23
/200
5
9/24
/200
5
9/24
/200
5
9/25
/200
5
9/26
/200
5
9/27
/200
5
9/27
/200
5
9/28
/200
5
9/29
/200
5
9/30
/200
5
9/30
/200
5
10/1
/200
5
10/2
/200
5
10/3
/200
5
10/3
/200
5Date
Tem
pera
ture
(C)
Temperature (*C) (1 m)Temperature (*C) (2.5 m)Temperature (*C) (8 m)
Class ActivitiesClass ActivitiesExpanding our KnowledgeExpanding our Knowledge
HydrologyMichael Simpson from Antioch New England Graduate School gave a lecture and guided tour of nearby watershed of Lake Sunapee.Providing insight to how the water flows within a watershed.
Impervious Surface Literature ReviewsMethodologyStorm-water managementTypes of impervious surfacesImpacts on wildlife
What is a Watershed?What is a Watershed?
Area of land which is not separated by political boundaries that contributes runoff into a common body of water
Merrimack River
Saco River
Upper Connecticut River
Androscoggin River
Lower Connecticut River
Pleasant Lake WatershedWithin The
Upper Blackwater River Watershed
Major Basin
Merrimack River
Upper ConnecticutRiver
Pleasant Lake
Frazier Brook
Upper Blackwater River
Lane River
Sunapee Lake
Sawyer Brook-Stocker Brook Eastman
Lake Sunapee
Little Lake Sunapee
Sub-watershed
New London
Wilmot
Springfield
Why is Watershed Management Why is Watershed Management Important?Important?
Benefits the CommunityAestheticsHistorical preservationEconomicsBest practice development
Improves Environmental HealthWater qualityBiodiversity
Watershed HistoryWatershed History
Shift in ThinkingNatural verses political boundariesImportance of environmental issuesCitizen education and actionLand use and connectivity
Pleasant Lake Protective Association (1969)Our partner in completing the Inventory
The Inventory ExplainedThe Inventory Explained
Major GoalsEstablishes baseline informationProvides standardized methods Creates starting point for future management plans
CategoriesCategories
The Inventory has three main categories...
Recreational ValueWater clarity, restrictions, shoreline features
Unique or Outstanding ValueUnique/scenic features, habitat, open space
Susceptibility to ImpairmentShallow depth, exotic species, excessive recreation
AttributesAttributes
…and ten attributes:Geographical, Spatial, and Demographic InformationPhysical WaterbodyCharacteristicsWater Quality CharacteristicsBiological/Ecological Characteristics
Recreational CharacteristicsRestrictions or Prohibited UsesUnique CharacteristicsShorelandCharacteristicsWatershed CharacteristicsVisual/Aesthetic Characteristics
ScoringScoring
Recreational ValueRanked 1 – 5, with 1 being the lowest level of recreational value and 5 the highest
Unique or Outstanding ValueRanked 1 – 5, with 1 being the least unique or outstanding value and 5 the most.
Susceptibility to ImpairmentRanked 1 – 5, with 1 being the lowest level of susceptibility and 5 being the highest.
A Typical Inventory QuestionA Typical Inventory Question
ATTRIBUTE 2. PHYSICAL WATERBODY CHARACTERISTICS
Question A. Surface water area.
Directions – The New Hampshire Lakes and Ponds Inventory provides the best and most comprehensive source of information to answer this and many of the other questions for this section. The user(s) should contact NH DES Watershed Management Bureau to obtain a copy that has the most recent information for the waterbody.
Rationale – Surface water area is an important consideration when developing a management plan, as larger waterbodies will often require more complex strategies and innovative solutions for long-term protection or restoration of its natural resources. Also, it is important recognize the waterbody’srelative size as compared to other New Hampshire lakes and ponds.
A Typical Inventory QuestionA Typical Inventory Question
Evaluation Question
Comments, Actual Values or Computations
Evaluation Criteria Rec. Out. Sus.
A) Surface water area (acres excluding wetlands) Source of information
and date of survey:
1) 10 – 50 acres2) 51 – 100 acres3) 101 – 250 acres4) 251 – 1,000 acres5) > 1,000 acres
12345
One question may have fall into two evaluation categories
Evaluation Question
Comments, Actual Values or Computations
Evaluation Criteria Rec. Out. Sus.
A) Total resident population w/in 30 mile radius Source of information
and date of survey:
1) < 100,000 people2) 100,000 – 250,0003) 250,000 – 500,0004) 500,000 – 1,000,0005) > 1,000,000 people
12345
12345
The Write The Write -- UpUp
Process Followed: Consulted the New Hampshire Lakes and Ponds Inventory Lake Trophic Data for Pleasant Lake.
Finding and Analysis: The surface area of Pleasant Lake is 605.90 acres.
Evaluation Criteria:Score:1.) 10 – 50 acres 12.) 51 – 100 acres 23.) 101 – 250 acres 34.) 251 – 1,000 acres 45.) >1,000 acres 5
Sources: New Hampshire Lakes and Ponds Inventory, Pleasant Lake. Lake Trophic Data.
Department of Environmental Services, 1997.
Assessment of Question: This question is adequate as stated.
Map ExampleMap Example
Some questions may require a map which will appear immediately after the write-up in the inventory
Waterbody Location in StateAttribute 1: Question A
Miles0 2 4
LegendPleasant Lake
New London Boundary
Digital data in NH GRANIT represent the efforts of the contributing agencies to record information from the cited source materials. Complex Systems Research Center (CSRC), under contract to the Office of State Planning (OSP), and in consultation with cooperating agencies, maintains a continuing program to identify and correct errorsi in these data. Neither OSP nor CSRC make any claim as to the validity or to any implied uses of these data.
Waterbody Location
What is GIS?What is GIS?
GIS = Geographic Information SystemA system for
CapturingManagingManipulatingDisplayingand Analyzing…Spatial Data
Data is input in layers, which can be overlaid or joined
GISGIS
We are using GIS to address many questions in the inventory:
Shoreland/Watershed development and land use.Shoreland/Watershed ownership.Protected lands within shoreland/watershed.Shoreland/Watershed topography (slope).Shoreland/Watershed geology and soils.Percents of impervious surface with the shoreland/watershed.
GISGIS
We are using GIS to address many questions in the inventory:
Shoreland/Watershed development and land use.Shoreland/Watershed ownership.Protected lands within shoreland/watershed.Shoreland/Watershed topography (slope).Shoreland/Watershed geology and soils.Percents of impervious surface with the shoreland/watershed.
Pleasant Lake
Pleasant Lake
250 ft. Buffer
Pleasant Lake
250 ft. Buffer
Buildings
Pleasant Lake
250 ft. Buffer
Buldings
Impervious SurfacesImpervious Surfaces
Defined:“Any material that prevents the infiltration of water into the soil” (Arnold & Gibbons 243)
Parking lots, lawns, roofs, roads, etc…
Associated problemsNon-point source polluter
Potential to increase turbidity, conductivity, pH
Decline in infiltration/percolationImpact wildlife
Threshold of DegradationThreshold of Degradation
% Impervious Surface Waterbody Status
Less than 10 percent Protected
10-30 percent Initial degradation/Impacted
Greater than 30 percent Heavily degraded
Brabec, Elizabeth, Stacey Schulte, and Paul L. Richards. "Impervious Surfaces and Water Quality: A Review of Current Literature and Its implications for Watershed Planning." Journal of Planning Literature May 2002
Our ExperimentOur Experiment
Percent imperviousnessThe role of slope on an impervious surfaceData collectionMaterials/Methodologies
Plans for Next SemesterPlans for Next Semester
Finalizing the Inventory Impervious Surface experiment and analysisRate of development
Bringing Together all the InformationFinal assessment of Pleasant Lake Watershed
Communicating FindingsFinal presentation in MayPublished project portfolio
The Third Year Project Team would like to thank the members of the Pleasant Lake Protective Association
for their help and input.
Special thanks to Kittie Wilson for all of her assistance with our project.
Questions?