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Utilizing GIS to Locate
Environmental & Recreational Stream
Flows & Institutionally Protected Streams
in the Snake-Salt Ri...
Water Resource Data System and Wyoming Water Development Office
The Water Resources Data System (WRDS) is a clearinghouse ...
Introduction
In 2012, the Wyoming Water Development
Office commissioned a report entitled
Environmental and Recreational W...
Definitions:
Recreational water uses
Non-consumptive uses that require a sufficient water
supply for a quality experience....
Identified 3 Types of Environmental and
Recreational Uses
Protected Uses – These uses are protected, in some way, from inc...
Snake River Basin

Snake/Salt River Basin

WA
MT

1. Approximately 90 percent of this
region is under public ownership
(i....
Goal of GIS Analysis
To identify the location of stream segments that are deemed by Federal and
Wyoming State agencies as ...
Methods
Simple map algebra function (e.g. raster calculator analysis) was performed
on multiple, existing GIS coverages in...
Variables
GIS data in Wyoming was limited by availability to the following 5 variables:

A.
B.
C.
D.
E.

National Wild and...
WGF Stream Classifications

Federal and State
Institutional Protection
Values

Category
Blue Ribbon (national importance)
...
The Basic Steps
1. Identify
&
Digitize
stream
segments to be included in the
model; based upon segments used in
both the W...
Use & Protection Maps
Overlapping the
Two Models
Knowing which stream
segments are highly used
and associated with
recreational/environmental
us...
Snake River Basin
Environmental and Recreational
Use Locations

Use Locations Overlaid with
Institutional Protections Valu...
Salt River Basin
Environmental and Recreational
Use Locations

Use Locations Overlaid with
Institutional Protections Value...
Part 2: Steps after Steam
Segments are identified…
GIS Layer
Aquatic Habitat Priority Areas
Bridger Teton Sites
Bridger Te...
Classify uses in each subbasin as Protected,
Competing, or
Complimentary and
analyze each use in
relation to other
traditi...
Final product will be part of the
Environmental and Recreational Water Use Technical Memorandum
Snake/Salt River Basin Pla...
Thank you
Questions?
Chris Nicholson
Water Resources Data System & Wyoming State Climate Office
307-766-3741
cnichol5@uwyo...
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2013 GISCO Track, Utilizing GIS to Locate Environmental and Recreation Stream Flows and Institutionally Protected Streams in the Snake-Salt River Basin, Wyoming by Chris Nicholson and Tony Bergantino

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2013 GISCO Track, Utilizing GIS to Locate Environmental and Recreation Stream Flows and Institutionally Protected Streams in the Snake-Salt River Basin, Wyoming by Chris Nicholson and Tony Bergantino

  1. 1. Utilizing GIS to Locate Environmental & Recreational Stream Flows & Institutionally Protected Streams in the Snake-Salt River Basin, Wyoming Chris Nicholson Tony Bergantino University of Wyoming Water Resources Data System & Wyoming Water Development Office October 2013 GIS in the Rockies
  2. 2. Water Resource Data System and Wyoming Water Development Office The Water Resources Data System (WRDS) is a clearinghouse of hydrological and climatological data for the State of Wyoming and serves a support role to the WWDO. WRDS is funded by the WWDO and housed within the Department of Civil and Architectural Engineering at the University of Wyoming. Õ The Wyoming Water Development Program was established in 1975 to promote the development of the state's water resources. The program provides, through a commission, funding for planning, construction, and operation of water projects. These projects can be for water conservation, storage, distribution and use of water deemed as necessary to develop and preserve Wyoming's water resources. Õ River Basin Planning divides the State into 7 Basins for study of water availability, use, and future use projections. Õ
  3. 3. Introduction In 2012, the Wyoming Water Development Office commissioned a report entitled Environmental and Recreational Water Use Study that sought to improve the accuracy of defining and displaying recreational and environmental water use estimates in Wyoming’s river basins.
  4. 4. Definitions: Recreational water uses Non-consumptive uses that require a sufficient water supply for a quality experience. • boating • fishing • waterfowl hunting • winter sports Environmental uses Non-consumptive, & include water needed to support fish, water dependent plants, many animal species, & associated water-dependent ecosystem functions. • maintaining minimum reservoir pools • instream flows • direct wildlife consumption • evaporation • maintenance of riparian areas.
  5. 5. Identified 3 Types of Environmental and Recreational Uses Protected Uses – These uses are protected, in some way, from incursions by traditional water uses. (instream flow segments & wild river segments) Complementary Uses – These uses exist without explicit protection, but continue to exist typically by virtue of their location. (uses in the National Forest that exist because of Federal Management) Competing Uses – Competing uses are those environmental or recreational uses that are in a location where other traditional water use diverters may constrain or eliminate the environmental or recreational use at any point in time. How do we begin to know where these uses are in relation to stream segments?
  6. 6. Snake River Basin Snake/Salt River Basin WA MT 1. Approximately 90 percent of this region is under public ownership (i.e. federal and state lands) 2.Home to two national parks (the southern portion of Yellowstone National Park and all of Grand Teton National Park) 3.Known for its world recreational opportunities class An excellent test case to examine recreational and environmental uses using GIS. OR ID WY CA NV UT CO
  7. 7. Goal of GIS Analysis To identify the location of stream segments that are deemed by Federal and Wyoming State agencies as having recreational and environmental uses associated with them AND have some level of institutional protection. 2 Parts to the Study 1) Develop a GIS model to identify stream segments with varying levels of both use and protection. 2) Look at surrounding uses in relation to these segments to see which traditional uses (points) may be protected, complimentary or conflicting. This presentation focuses on #1
  8. 8. Methods Simple map algebra function (e.g. raster calculator analysis) was performed on multiple, existing GIS coverages in ArcGIS 10.0 with Spatial Analyst to create two models. 2 Models were created by assigning stream segments relative values: 1. Stream segments that have differing levels of recreational and environmental use 2. Stream segments with differing levels of “protection” resulting from institutional constraints. The results of the GIS model illustrate the stream segments where: 1. Future development may be difficult 2. Recreational and Environmental flows may be complementary to OR in competition with other traditional water uses (i.e. agriculture, municipal, industrial uses)
  9. 9. Variables GIS data in Wyoming was limited by availability to the following 5 variables: A. B. C. D. E. National Wild and Scenic Rivers WGF Critical Stream Corridors WGF Stream Classifications Instream Flow filings Land Ownership These datasets are readily available online, alleviating the need to create from scratch any “new” data for the analysis.
  10. 10. WGF Stream Classifications Federal and State Institutional Protection Values Category Blue Ribbon (national importance) Red Ribbon (statewide importance) Yellow Ribbon (regional importance) Not Present Value 5 4 3 0 Instream Flow Filings Category Present Not Present Value 5 0 Instream Flow Filings Category Present Not Present Value 5 0 National Wild & Scenic Rivers Category Wild Scenic Recreation Value 15 10 5 Land Ownership Category USFS National Forest Bureau of Land Management USFS Wilderness Area & Wilderness Study Areas NPS National Park/Monument National Wildlife Refuge State Wildlife Habitat Management Area Wyoming State Land Private Lands Value 3 3 15 15 15 4 2 0 WGF Critical Stream Corridors Category Present Not Present Value 5 0 National Wild & Scenic Rivers Recreational & Environmental Use Values (Variable values were discussed ad nauseum ) Category Wild Scenic Recreation Value 5 4 3 Land Ownership Category USFS National Forest Bureau of Land Management USFS Wilderness Area NPS National Park/Monument National Wildlife Refuge State Wildlife Habitat Management Area Wyoming State Land Private Lands Value 5 5 4 4 3 3 1 0
  11. 11. The Basic Steps 1. Identify & Digitize stream segments to be included in the model; based upon segments used in both the Water Availability Model and those found in the five GIS variables used in the model. 2. For polyline layers (i.e. instream flow segments), buffer segment by quarter-mile based on attributes. 3. Place a quarter-mile buffer around digitized stream segments & Clip polygon layers to stream segment polygon (i.e. land ownership). 4. Convert vector files to rasters. 5. Reclassify raster files based on two sets of variable values 6. Sum raster files using Spatial Analyst Raster Calculator. Critical Streams Blue Ribbon Streams Instream Flow Segments National Wild & Scenic Rivers Land Ownership Raster Calculator: Sum Scores of Relative Level of Use & Institutional Protection
  12. 12. Use & Protection Maps
  13. 13. Overlapping the Two Models Knowing which stream segments are highly used and associated with recreational/environmental uses AND streams that are institutionally protected allows us to see if there are areas of conflict.
  14. 14. Snake River Basin Environmental and Recreational Use Locations Use Locations Overlaid with Institutional Protections Values
  15. 15. Salt River Basin Environmental and Recreational Use Locations Use Locations Overlaid with Institutional Protections Values
  16. 16. Part 2: Steps after Steam Segments are identified… GIS Layer Aquatic Habitat Priority Areas Bridger Teton Sites Bridger Teton Trails Caribou Targhee Dispersed Areas Caribou Targhee Dispersed Sites Caribou Targhee Sites Elk Feed Grounds Fishing Spots Golf Courses Grand Teton National Park Resources National Wetlands Inventory Nature Conservancy Easements Non Nature Conservancy Easements Palisades Wilderness Study Area Scenic Highways and Byways Shoal Creek Wilderness Study Area Ski Areas Trout Unlimmited Projects Yellowstone National Park Resources
  17. 17. Classify uses in each subbasin as Protected, Competing, or Complimentary and analyze each use in relation to other traditional uses that surround it. For Example: Snake Headwaters @ All Uses within the National Parks are Protected @ 6 Protected Uses outside of the Parks H 3 Camping, 3 Trailheads
  18. 18. Final product will be part of the Environmental and Recreational Water Use Technical Memorandum Snake/Salt River Basin Plan 2013 Update http://waterplan.state.wy.us/plan/snake/snake-plan.html
  19. 19. Thank you Questions? Chris Nicholson Water Resources Data System & Wyoming State Climate Office 307-766-3741 cnichol5@uwyo.edu http://www.wrds.uwyo.edu http://www.wrds.uwyo.edu/sco/climate_office.html

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