development of cari · cari dataset california water quality monitoring council data users cities ....
TRANSCRIPT
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Development of CARI California Aquatic Resource Inventory
Kristen Cayce
San Francisco Estuary Institute June 20, 2012
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What is CARI?
• Statewide map of surface waters and riparian areas
• Coordinated effort that integrates across spatial scales
• Tool in the CA Wetland and Riparian Areas Monitoring Plan
LOCAL REGIONAL STATE NATIONAL
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Why do we need CARI?
• Standardized map across the state • Contemporary map that meets local
management needs • Consolidate multiple mapping efforts • Support emerging state Wetland and
Riparian Areas Protection Policy – Emphasis on landscape/watershed
context for management
Fundamental building block for aquatic resource management
Where are our wetlands?
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One Wetland Map
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Process to get to CARI • Pilot projects
– Bay Area and Southern California Coast – Proposition 50 funding
• Developed and implemented draft mapping standards – Drew heavily from NWI and NHD
anticipating integration • Generated stream and wetland pilot
datasets demonstrating the mapping methods
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Bay Area Aquatic Resources Inventory
BAARI available on gis.sfei.org/geofetch
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Map Elements • Stream Network
– Natural and artificial features – Stream order – Flow direction
• Tidal Polygonal Wetlands
– Marsh habitat elements
• Non-tidal Polygonal Wetlands – Natural and artificial features – Seeps and springs
• Riparian Functional Areas
– Vegetation riparian – Hillslope riparian
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Mapping Data Sources
• Primary Source data – 2009 National Agricultural
Imagery Program (USDA NAIP)
• Collateral Data – ArcHydro drainage network – Digital Topographic Map
1:24,000 scale DRG (USGS) – National Elevation Dataset 10m resolution DEM (USGS) – LiDAR-derived products – Hillshade – Google Earth – Available local data
• Standards have been vetted by
Science Advisory Group and NWI
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Stream Network Standards • Scale:
– Non-tidal = 1:5,000 – Tidal = 1:2,500
• Minimum Mapping Unit
– Natural Channels = 50 m – Artificial Channels = 25 m * except body of water connectors
• Channel types
– Channel (tidal & non-tidal) – Ditch (tidal & non-tidal) – Subsurface drainage – Artificial channel
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Polygonal Wetland Standards
• Scale: – Non-tidal = 1:5,000 – Tidal = 1:2,500
• Minimum Mapping Unit
– Non-tidal = 100 m2
– Tidal = 50 m2
• 9 major wetland types
Complete BAARI mapping standards can be downloaded at: www.sfei.org/baari/methods
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Stream Network Mapping Flow Chart
ArcHydro
Is the possible channel in the NHD?
NO YES
Digitized based on NAIP Is the possible channel in the DRG or NED?
YES NO
Is the possible channel evident in the NAIP?
Digitized based on NAIP
YES NO
If the possible channel is hidden or there is
a strong evidence of its existence
Then Digitized based on DRG
Is the possible channel evident in the NAIP?
YES NO
Digitized based on NAIP NO channel
Part 1
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NAIP
Is the possible channel in the NHD? NO YES
Digitized based on NAIP
Is the possible channel in the DRG or NED?
YES NO
Digitized based on NAIP
NO channel
Part 2
Is the possible channel indisputably evident in NAIP? * This is a rare situation when the DRG or NED is so wrong that
it fails to indicate the existence of a channel that is clearly evident in the NAIP
YES
Digitized based on NAIP
NO
Stream Network Mapping Flow Chart
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Draft Map
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BAARI Quality Control
Draft Stream Network Six Randomly Selected Areas for QA 10% of
total area
SFEI QA Mapping to standard
Comparison of draft to standard quantified/scored
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QAQC Results
QUAD NAME # QAQC ALIGNMENT (%) OVER
MAPPED (%) UNDER
MAPPED (%) CLASSIFICATION
(%)
Rutherford 1 32 31 22 20
2 18 18 14 15
Napa 1 10 11 14 14
Cordelia 1 12 4 22 18
2 2 3 7 5
Any quad with >15% error returned for correction
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QAQC Overview
• 1:10k • Quick review • Entire draft map • ID and edit major
errors
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Merge and Post-Processing
• Data management • Topological assessment • Application of stream order • Flow direction • Planarize
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Comparison of Methods
BAARI
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Process to CARI • Tested draft methodology
in other regions – Lake Tahoe Basin – Sacramento-San Joaquin
River Delta • Adjusted methods to
accommodate regional differences – Typically classification
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CARI Technical Advisory Team
• Mapping, GIS, database technicians • Experience in large-scale wetland or
vegetation mapping project • Series of all-day meetings to outline
the nuts and bolts of mapping protocol for the state
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CARI Technical Advisory Team • Representatives from local, regional, state and
federal agencies – USGS, National Hydrography Dataset – USGS, Interagency Watershed Mapping Committee – USFWS, National Wetland Inventory – State Regional Water Board – State Coastal Commission – CA Dept of Fish and Game – CA Dept of Water Resources – Bay Conservation and Development Commission – So Cal Coastal Watershed Research Program – San Francisco Estuary Institute – Marin County Planning Department
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CARI Mapping Standards • Primary and Ancillary datasets
– Required and recommended • Scale • Targeted Mapping Units • Geometry • Projection • Quality Control process • Workflow • Technology specification • Delivery of maps
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CARI the Evolution
• It’s a continuing process • v0 = best available data • v1 = elevate datasets nearest to
CARI standards to the standard • CARI workgroup for on-going
governance • Outreach, outreach, outreach
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CARI Workgroup
Members Cities Counties Special Districts Regional Parks State Parks NGOs Universities State Agencies Federal Agencies others
Data Management Funding Standards and Protocols Changing Technology Coordination Training Data Delivery Etc.
CARI Dataset
California Water Quality Monitoring Council
Data Users Cities Counties Special Districts Regional Parks State Parks NGOs Universities State Agencies Federal Agencies others
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2 Levels of Stewardship
Local • Improve CARI by
incorporating local knowledge and data
• Better understand local map and GIS needs
• Develop a mechanism for a “living map”
• Pilot project with Special District
National • Facilitate state/federal
coordination • Integrate CARI into
NWI and NHD • Leverage existing
tools • Pilot project with NWI
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CARI Applications
• Basemap for interactive websites – EcoAtlas (aka Wetland Tracker) – Greenbelt Mapper – My Water Quality Portals
• Net Landscape Change • Status and Trends • Research and Modeling
– Sediment budgets – Spartina monitoring
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EcoAtlas formerly Wetland Tracker www.californiawetlands.net
EcoAtlas
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Data rich, Meaningful information
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Data rich, Meaningful information
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Data rich, Meaningful information
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Data rich, Meaningful information
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CARI Applications Sample frame 1. Probabilistic
sample designs
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CARI Applications NHD CARI
Developer claims 5,000 linear feet of creek in project area
22,600 linear feet 4.5x more channel
Impact Assessment
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Thank you [email protected]
Bay Area Aquatic Resources Inventory (BAARI) www.sfei.org/baari Tahoe WRAMP http://tahoemonitoring.org/tahoe-wramp.html Southern California Wetland Mapping Project http://www.socalwetlands.com/website/main.htm Wetland Tracker http://www.californiawetlands.net/tracker/ California Water Quality Monitoring Council http://www.waterboards.ca.gov/mywaterquality/monitoring_council/index.shtml California Wetland and Riparian Protection Policy http://www.waterboards.ca.gov/water_issues/programs/cwa401/wrapp.shtml