Harvey Basemap - Hydrology Map Data
|Authors:||U.S. Geological Survey (USGS) · NOAA National Weather Service · Texas Commission for Environmental Quality (TCEQ) · David Arctur|
|Owners:||David Arctur · Harvey datamgr|
|DOI:||10.4211/hs.adb14c9c073e4eee8be82fadb21a0a93 How to Cite|
|Resource type:||Composite Resource|
|Created:||May 25, 2018 at 4:04 a.m.|
|Last updated:||Nov 27, 2018 at midnight by David Arctur|
This resource contains medium-resolution (1:100k) National Hydrography Dataset (NHDPlus)  map data for a region of 39 Hydrologic Unit Code (HUC) 6-digit (HUC6) basins around the Hurricane Harvey impact zone across Texas, Louisiana, Mississippi and Arkansas. This includes 5978 subwatersheds, 190,192 catchments, and 192,267 flowlines.
USGS active stream gages (924) were downloaded from the USGS National Water Information System (NWIS)  and augmented with each gage's HUC2, HUC4, HUC6, HUC8, HUC10 & HUC12 basin identifiers, and COMID of the NHD stream reach for the containing catchment. This allows the user to easily aggregate gages by various watershed boundaries.
NOAA Advanced Hydrologic Prediction System (AHPS)  has 362 river forecast points in the Harvey study area. Many of these are co-located with USGS NWIS gages to leverage authoritative observation data.
A shapefile of Texas dams (7290) was directly received from the Texas Commission for Environmental Quality (TCEQ) . They suggest if you have any questions about data, to make an Open Records Request .
 NHDPlus Version 2 [http://www.horizon-systems.com/NHDPlus/V2NationalData.php]
 USGS NWIS [https://waterdata.usgs.gov/nwis]
 NOAA AHPS [https://water.weather.gov/ahps/forecasts.php]
 TCEQ Data and Records [https://www.tceq.texas.gov/agency/data]
 TCEQ Open Records Request [https://www.tceq.texas.gov/agency/data/records-services/reqinfo.html]
How to cite
This resource is shared under the Creative Commons Attribution CC BY.http://creativecommons.org/licenses/by/4.0/
|Coordinate System/Geographic Projection:||WGS 84 EPSG:4326|
|Coordinate Units:||Decimal degrees|
|U.S. Geological Survey (USGS)|
|NOAA National Weather Service|
|Texas Commission for Environmental Quality (TCEQ)||Austin, TX|
|David Arctur||University of Texas at Austin||512-771-1434|
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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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