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Irma Basemap - Boundaries and Hydrology Data

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Type: Resource
Storage: The size of this resource is 1.1 GB
Created: Sep 24, 2018 at 10:12 p.m.
Last updated: Nov 26, 2018 at 4:37 a.m.
DOI: 10.4211/hs.54d4d4195dc1481b963af317492033e5
Citation: See how to cite this resource
Content types: Geographic Feature Content 
Sharing Status: Published
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This resource contains medium-resolution (1:100k) National Hydrography Dataset (NHDPlus) [1] map data for a region of 23 Hydrologic Unit Code (HUC) 6-digit (HUC6) basins around the Hurricane Irma impact zone across Florida, Georgia, and the Carolinas. This includes 5,236 subwatersheds, 217,308 catchments, and 220,418 flowlines.

State and county boundaries were obtained from the Esri Living Atlas [2].

USGS active stream gages can be downloaded from the USGS National Water Information System (NWIS) [3], or visualized at the USGS WaterWatch site [4].
NOAA Advanced Hydrologic Prediction System (AHPS) river forecast points can be downloaded as well [5]. Many of these are co-located with USGS NWIS gages to leverage authoritative observation data.

[1] NHDPlus Version 2 []
[2] Esri Living Atlas []
[3] USGS NWIS []
[4] USGS WaterWatch []
[5] NOAA AHPS []

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
East Longitude
South Latitude
West Longitude


Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Related Resources

The content of this resource references NHDPlus Version 2 []
The content of this resource references Esri Living Atlas []
The content of this resource references USGS NWIS []
The content of this resource references NOAA AHPS []
The content of this resource references USGS WaterWatch []
This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Hurricane Irma 2017 Collection David Arctur · datamgr Irma  Published Open Access


Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation (NSF) RAPID: Archiving and Enabling Community Access to Data from Recent US Hurricanes 1761673

How to Cite

U.S. Geological Survey (USGS), NOAA National Weather Service (2018). Irma Basemap - Boundaries and Hydrology Data, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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