using usgs’ national geospatial program and national hydrography database in indian country
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Using USGS’ National Geospatial Program and National Hydrography Database in Indian Country. 20 th Annual Region 9 Tribal/EPA Conference 11-29-12. Outline. Introductions What is the NHD? W hy is it important to Tribes ?. - PowerPoint PPT PresentationTRANSCRIPT
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Using USGS’ National Geospatial Program and National Hydrography
Database in Indian Country20th Annual Region 9Tribal/EPA Conference
11-29-12
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Outline
1.Introductions2.What is the NHD?3.Why is it important to Tribes?
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Kimberly [email protected]
Christina [email protected]
Carol OstergrenNational Geospatial
Hank NelsonTechnical NHD Lead [email protected]
USGS Contacts
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What is the NHD and why is it important to
Tribes?
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What is the National Hydrography Dataset?Essentially the surface water features found on topographic maps
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High Resolution National Hydrography Dataset Statistics
Area Feature Km2 Mi2 # Features
Lakes1 134,073 51,766 6,237,938
Rivers2 49,741 19,205
Water Plants3 2,524 975 136,447
Swamp/Marsh4 107,176 41,381 942,072
Ice Mass 69,236 26,733 21,643
Inundation Area5 10,352 3,997
1 - Not including the Great Lakes2 - Including only river polygon area, not single-line river area3 - Typically water filtration, sewage treatment, fish hatcheries4 - Based on USGS topographic mapping standards – not National Wetland Inventory5 - Difference between normal pool area of lakes and area at spillway height
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High Resolution National Hydrography Dataset Statistics
Linear Feature Km Mi Additional Data
Streams1 10,463,136 6,501,479 Perennial5 – 3,207,571 KmIntermittent5 – 7,190,124 Km
Artificial Path2 1,139,929 708,318 In River ~ 353,378 KmIn Lake ~ 638,360 Km
Canal/Ditch 528,909 328,648
Water Pipeline 16,826 10,455
Connector3 29,706 18,458
Coastline4 151,705 94,265
1 – Generic, perennial, and intermittent single-line streams2 – Linear pathway distance through lakes, river polygons, canal polygons, and some marsh/swamp3 – Pathway known to exist, but not seen on imagery4 – Including Great Lakes5 – Not conclusive
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Streams – Creating the fundamental network
Swan Creek
Perennial
Intermittent
Ephemeral
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Flow Direction – Providing intelligence to the data
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Navigation – The basis for analysis
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Navigation – Where does a toxic spill go?
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Reach14010002000421
Reach14010002003345
Linear Referencing – Stream “Reaches”
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100
0
50
7525
14010002000421
Linear Referencing – Stream addresses
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USGS Streamgage09050000
Address:Reach – 14010002000421Measure – 19.8392
Coordinate106 05 13.955 W39 32 43.472 N
Linear Referencing – Data “Events”
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The river gains intelligence about streamflow
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Connecting the streamgage to the network
Streamgage
Dam
Blue River
Artificial Path(Blue River)
Green MountainReservoir
Downstream
Upstream
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Dams and Streamgages Integrated with the NHD
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nationalmap.gov
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The
Nat
iona
l Map
Hydrography
Elevation
Orthoim
agery
Tra
nspo
rtatio
n
Structures
National Hydrography Dataset
Watershed Boundary Dataset
Lakes
Streams
Fish Habitat
Chemistry
Cutthroat Trout
Map Portal
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PASSAGE BARRIERS IN CALIFORNIA
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Flow volume estimates in the NHDPlus do not account for diversions
NHDPlus estimates only natural stream flow
Colorado RiverPhoto courtesy of Jonathan Waterman
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Trans - Basin Diversions
Subregional Regional
Subbasin
3 Levels
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Inter- Regional
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Inter- Regional
Colorado River Aqueduct Diversion 242 miles long 1.2 million acre-feet per year
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Inter- Subregional
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California Aqueduct 444 miles long 2.6 million acre-feet per year
Inter- Subregional
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Inter- Subbasin
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California Diversions
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32
A cartographic curiosity -Any guesses what this is?
Thank for your attentionthis afternoon!
More info atwww.nhd.usgs.gov