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Irma Basemap - Boundaries and Hydrology Data

Authors: U.S. Geological Survey (USGS) · NOAA National Weather Service
Owners: datamgr Irma · David Arctur
DOI:10.4211/hs.54d4d4195dc1481b963af317492033e5 How to Cite
Resource type:Composite Resource
Created:Sep 24, 2018 at 10:12 p.m.
Last updated: Nov 27, 2018 at midnight by David Arctur


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 [http://www.horizon-systems.com/NHDPlus/V2NationalData.php]
[2] Esri Living Atlas [https://livingatlas.arcgis.com]
[3] USGS NWIS [https://waterdata.usgs.gov/nwis]
[4] USGS WaterWatch [https://waterwatch.usgs.gov]
[5] NOAA AHPS [https://water.weather.gov/ahps/forecasts.php]

Subject Keywords

counties,NHD,Georgia,hydrology,Irma2017,Florida,North Carolina,states,flowlines,catchments,HUC6,subwatersheds,South Carolina,basemap,USGS

How to cite

U.S. Geological Survey (USGS), NOAA National Weather Service (2018). Irma Basemap - Boundaries and Hydrology Data, HydroShare, https://doi.org/10.4211/hs.54d4d4195dc1481b963af317492033e5

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


Sharing status:

  • Published Resource  Published



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


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The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
U.S. Geological Survey (USGS)
NOAA National Weather Service
cites: NHDPlus Version 2 [http://www.horizon-systems.com/NHDPlus/V2NationalData.php]
cites: Esri Living Atlas [https://livingatlas.arcgis.com]
cites: USGS NWIS [https://waterdata.usgs.gov/nwis]
cites: NOAA AHPS [https://water.weather.gov/ahps/forecasts.php]
cites: USGS WaterWatch [https://waterwatch.usgs.gov]
This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Hurricane Irma 2017 Collection David Arctur · datamgr Irma  Published Open Access


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


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