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Analysis of Potential Scenic Sites for the Hill Analysis of Potential Scenic Sites for the Hill Country Conservancy and Hill Country AllianceCountry Conservancy and Hill Country Alliance
Nancy A. Heger, ManagerNancy A. Heger, Manager Gene Sipes, Assistant ManagerGene Sipes, Assistant ManagerMatt Broadaway, GIS AnalystMatt Broadaway, GIS Analyst Matt Gray, Web MasterMatt Gray, Web MasterImage source: http://www.philadelphianstours.com/Image source: http://www.philadelphianstours.com/
Final ReportFinal Report
•Introduction & PurposeIntroduction & Purpose
•DataData
•MethodsMethods
•ResultsResults
•DiscussionDiscussion
•Final DeliverablesFinal Deliverables
•ConclusionsConclusions
PurposePurpose• Identify potential sites for future preservation by the Hill Identify potential sites for future preservation by the Hill
Country Conservancy (HCC)Country Conservancy (HCC)• Identify areas that are “scenic” as defined by factors such as Identify areas that are “scenic” as defined by factors such as
topographical relief, proximity to water bodies, and vegetation.topographical relief, proximity to water bodies, and vegetation.• Provide a map of potential scenic sites that HCC can use to Provide a map of potential scenic sites that HCC can use to
identify areas for future preservationidentify areas for future preservation
SCOPESCOPE• Study region - 22 county area inStudy region - 22 county area in
Hill Country Hill Country
Defining ScenicDefining Scenic Topographic Variation i.e. slopeTopographic Variation i.e. slope
Areas with more relief preferredAreas with more relief preferred Distance from streamsDistance from streams
Areas closest to streams preferredAreas closest to streams preferred Land UseLand Use
Non-urban preferred over urbanNon-urban preferred over urban
VisibilityVisibility If areas are scenic, are they also If areas are scenic, are they also
visible from roads and/or visible from roads and/or waterwayswaterways
DataData Study RegionStudy Region CountiesCounties RoadsRoads Urban AreasUrban Areas
DataData 30 m DEM (Digital elevation Model30 m DEM (Digital elevation Model
Calculated slope (degree of slope)Calculated slope (degree of slope)
Streams LayerStreams Layer Selected out only perennial streamsSelected out only perennial streams
DEM
DataData Texas ecological system vegetation map Texas ecological system vegetation map
Recoded to Urban/Non-urbanRecoded to Urban/Non-urban NLDC 2001 map recoded Urban/Non-NLDC 2001 map recoded Urban/Non-
urbanurban Combined to create Urban/Non-urban layerCombined to create Urban/Non-urban layer
TXVegetationMap
VAL VERDE
EDWARDS
UVALDEKINNEY MEDINA
BELL
KERR
BEXAR
KIMBLE
LLANO
TRAVIS
REAL
HAYS
MASON
BURNET
SAN SABA
GILLESPIE
WILLIAMSON
BLANCO
BANDERA
COMAL
KENDALL
LAMPASAS
NLCD 2001
Urban/Non-Urban
Results - Hays County Pilot StudyResults - Hays County Pilot Study
Model RefinedModel Refined Scoring systemScoring system WeightingWeighting
Results – Scenic SuitabilityResults – Scenic Suitability
STUDY REGION Scenic Value
COUNT Pixel
Area (mi²) Percent
Urban 3470428 1206 5%
Barley scenic 4848138 1685 7%
Mildly scenic 18356402 6379 27%
Scenic 36399511 12649 53%
Highly scenic 4528752 1574 7%
Extremely scenic 1017894 354 1%
TOTAL 68621125 23845 100%
Results – Scenic SuitabilityResults – Scenic Suitability
REAL Scenic ValueCELL COUNT
Area (mi²) Percent
Urban 28372 10 1%
Barley scenic 0 0 0%
Mildly scenic 402332 140 19%
Scenic 976502 339 45%
Highly scenic 508697 177 24%
Extremely scenic 241857 84 11%
Total 2157760 750 100%
Results – Scenic SuitabilityResults – Scenic Suitability
TRAVIS Scenic ValueCELL COUNT
Area (mi²) Percent
Urban 737625 256 23%
Barley scenic 799 0 0%
Mildly scenic 913620 317 29%
Scenic 1299582 452 41%
Highly scenic 179017 62 6%
Extremely scenic 15158 5 0%
Total 3145801 1093 100%
Results – Scenic SuitabilityResults – Scenic Suitability
LLANO Scenic ValueCELL COUNT
Area (mi²) Percent
Urban 46117 16 2%
Barley scenic 0 0 0%
Mildly scenic 676517 235 23%
Scenic 2115475 735 71%
Highly scenic 121836 42 4%
Extremely scenic 17705 6 1%
Total 2977650 1035 100%
Results – Scenic SuitabilityResults – Scenic Suitability CLASS CELL COUNT AREA(mi²) PERCENTNot Visible 64246060 22324.99 93.68%Not Scenic/Urban 3598 77.70 0.33%Barely Scenic 314 0.11 0.00%Mildly Scenic 203448 70.70 0.30%Scenic 2980315 1035.64 4.35%Very Scenic 710461 246.88 1.04%Extremely Scenic 215868 75.01 0.31%Total 68580064 23831.02 100.00%
Results – Scenic Results – Scenic SuitabilitySuitability
Percent of Each Scenic Class Visible from Roads Class Cell Count Percent Area(mi²)Not Visible 33,888,499 49.43% 11776Not Scenic/Urban 2,438,038 3.56% 847Barely Scenic 1,595,116 2.33% 554Mildly Scenic 9,131,366 13.32% 3173Scenic 19,814,717 28.90% 6885Very Scenic 1,397,480 2.04% 486Extremely Scenic 294,985 0.43% 103Total 68,560,201 100.00% 23824
Results – Scenic Results – Scenic SuitabilitySuitability
Percent of Each Scenic Class Visible from Roads/ Streams
Class Cell Count Percent Area(mi²)
Not Visible 32,845,424 47.91% 11414Not Scenic/Urban 2,472,174 3.61% 859Barely Scenic 1,595,045 2.33% 554Mildly Scenic 9,138,884 13.33% 3176Scenic 20,496,153 29.90% 7122Very Scenic 1,647,041 2.40% 572Extremely Scenic 359,440 0.52% 125Total 68,554,161 100.00% 23822
Results – Scenic SuitabilityResults – Scenic Suitability
Natural Breaks X ScenicNatural Breaks X Scenic
Result of the Natural Breaks Viewshed x Scenic LayerResult of the Natural Breaks Viewshed x Scenic Layer
Many Areas Around Leakey With a High ScoreMany Areas Around Leakey With a High Score
Results – Scenic SuitabilityResults – Scenic Suitability
DiscussionDiscussion The Texas Hill Country overall is scenic.The Texas Hill Country overall is scenic.
Our model confirms what we know on a broad scaleOur model confirms what we know on a broad scale The model is more specificThe model is more specific 82% of the Texas Hill Country has some scenic value82% of the Texas Hill Country has some scenic value 28% is highly or extremely scenic28% is highly or extremely scenic
Much of the Hill Country is visible from streams and roads Much of the Hill Country is visible from streams and roads with many cells visible from more than 1 point.with many cells visible from more than 1 point. 52% visible cells 52% visible cells 27% of the cells are viewable from 5 or less points27% of the cells are viewable from 5 or less points
We were also able to estimate potentially scenic sites from We were also able to estimate potentially scenic sites from roads and waterways.roads and waterways.
Assumptions & LimitationsAssumptions & Limitations ScenicScenic
Selection of factors- three for the whole modelSelection of factors- three for the whole model Weighting of factors- assumption Weighting of factors- assumption Scope of the projectScope of the project
Detail for a county basisDetail for a county basis The human factor- limitation in every studyThe human factor- limitation in every study
ViewshedViewshed Scenic areas can be viewed from anywhere, not just roads Scenic areas can be viewed from anywhere, not just roads
and streams.and streams. Not enough computing power to processes the area as first Not enough computing power to processes the area as first
desireddesired
FINAL DELIVERABLESFINAL DELIVERABLES Final deliverables will include:Final deliverables will include: A Detailed Final Report (2 copies)A Detailed Final Report (2 copies) Professional Poster for display in the Geography Professional Poster for display in the Geography
Department Department WebsiteWebsite CD (2 copies) containingCD (2 copies) containing
All dataAll data MetadataMetadata Proposal, Progress, and Final reportsProposal, Progress, and Final reports PosterPoster Power Point presentationPower Point presentation Instructions on how to use CD (readme file)Instructions on how to use CD (readme file)
ConclusionsConclusions described the techniques that were used to determine the scenic described the techniques that were used to determine the scenic
beautybeauty study is an extensive literature review, much of which study is an extensive literature review, much of which
describes techniques describes techniques scenic suitability model was built that indicates potentially scenic suitability model was built that indicates potentially
scenic areasscenic areas maps indicating which scenic locations are visible from roads maps indicating which scenic locations are visible from roads
and streamsand streams we have indicated some limitations of the projectwe have indicated some limitations of the project