Introduction National Hydrography Dataset Plus (NHDPlus) Version 2
Using USGS’ National Geospatial Program and National Hydrography Database in Indian Country
description
Transcript of Using USGS’ National Geospatial Program and National Hydrography Database in Indian Country
Using USGS’ National Geospatial Program and National Hydrography
Database in Indian Country20th Annual Region 9Tribal/EPA Conference
11-29-12
Outline
1.Introductions2.What is the NHD?3.Why is it important to Tribes?
Kimberly [email protected]
Christina [email protected]
Carol OstergrenNational Geospatial
Hank NelsonTechnical NHD Lead [email protected]
USGS Contacts
What is the NHD and why is it important to
Tribes?
What is the National Hydrography Dataset?Essentially the surface water features found on topographic maps
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
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
Streams – Creating the fundamental network
Swan Creek
Perennial
Intermittent
Ephemeral
Flow Direction – Providing intelligence to the data
Navigation – The basis for analysis
Navigation – Where does a toxic spill go?
Reach14010002000421
Reach14010002003345
Linear Referencing – Stream “Reaches”
100
0
50
7525
14010002000421
Linear Referencing – Stream addresses
USGS Streamgage09050000
Address:Reach – 14010002000421Measure – 19.8392
Coordinate106 05 13.955 W39 32 43.472 N
Linear Referencing – Data “Events”
The river gains intelligence about streamflow
Connecting the streamgage to the network
Streamgage
Dam
Blue River
Artificial Path(Blue River)
Green MountainReservoir
Downstream
Upstream
Dams and Streamgages Integrated with the NHD
nationalmap.gov
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
PASSAGE BARRIERS IN CALIFORNIA
Flow volume estimates in the NHDPlus do not account for diversions
NHDPlus estimates only natural stream flow
Colorado RiverPhoto courtesy of Jonathan Waterman
Trans - Basin Diversions
Subregional Regional
Subbasin
3 Levels
Inter- Regional
Inter- Regional
Colorado River Aqueduct Diversion 242 miles long 1.2 million acre-feet per year
Inter- Subregional
California Aqueduct 444 miles long 2.6 million acre-feet per year
Inter- Subregional
Inter- Subbasin
California Diversions
32
A cartographic curiosity -Any guesses what this is?
Thank for your attentionthis afternoon!
More info atwww.nhd.usgs.gov