Where applicable, data is provided in ArcGIS geodatabases. All other data is downloadable as zipped shapefiles.

Boundaries
Boundary shapefiles for divisions, districts and groundwater management areas.

Title/Description	File Type	Last Updated
Division Boundaries	Zipped Shapefile	2/1/2010
District Boundaries	Zipped Shapefile	3/30/2016
Groundwater Management Districts	Zipped Shapefile	9/1/1996
Designated Basins	Zipped Shapefile	9/1/1996
Produced Water Non Tributary Boundaries	Geodatabase (10.1 File GDB)	5/6/2015

Climate
Statewide climate isohyet shapefiles.

Title/Description	File Type	Last Updated
Average Evaporation - Free Water (1956-1970)	Zipped Shapefile	1982
Average Precipitation (1951-1980)	Zipped Shapefile	1993
Solar Radiation	Zipped Shapefile	1992

HydroBase Point Data
HydroBase Data shapefiles include climate station, structures, surface water and well data. All shapefiles are in statewide coverages. These datasets will be updated approximately once a month.

Title/Description	File Type	Last Updated
Climate Data - climate, evaporation, temperature, precipitation & solar radiation stations	Zipped Shapefile	6/2/2017
Structures - with water rights	Zipped Shapefile	6/2/2017
Structure Features - points of interest, measuring locations, recharge areas, well fields, etc.	Zipped Shapefile	6/2/2017
Surface Water Gages - Real Time (current conditions)	Zipped Shapefile	6/2/2017
Surface Water Gages - Historic (with Period of Record)	Zipped Shapefile	6/2/2017
Well Applications	Zipped Shapefile	6/2/2017
Well Geophysical Logs	Zipped Shapefile	6/2/2017
Wells with Water Levels	Zipped Shapefile	6/2/2017
Final Permits - Designated Basins	Zipped Shapefile	6/2/2017

Groundwater
Groundwater data includes aquifer contours and properties, well data, and other groundwater point and raster/grid data. Geodatabases are 9.2 ArcGIS personal geodatabases.

Title/Description	File Type	Last Updated
Statewide Bedrock Aquifers	Zipped Shapefile	6/18/2014
Statewide Alluvial Aquifers	Zipped Shapefile	6/18/2014
Denver Basin Bedrock Data	Geodatabase	2006
South Platte Alluvial Data	Geodatabase	2006
Division 1 Aquifer Grids	Raster	2009

Irrigated Lands
Irrigated Lands geodatabases provide irrigated land coverages, associated ditch headgates and wells, and relational tables for the years listed below. Zipped shapefiles include irrigated lands, ditch headgates, ditch service areas, and wells, where available. *Latest version (2/20/2015) includes a change to Parcel ID to make it unique across the state.

Title/Description	File Type	Last Updated
Division 1 Irrigated Lands (1956, 1976, 1987, 1997, 2001, 2005, 2010)	Geodatabase, Zipped Shapefiles	3/30/2016
Division 1 - Republican Irrigated Lands (2010, 2015, 2016)	Geodatabase, Zipped Shapefiles	6/26/2017
Division 3 Irrigated Lands (1936, 1998, 2002, 2005, 2009 - 2015)	Geodatabase, Zipped Shapefiles	9/21/2016
Division 4 Irrigated Lands (1993, 2000, 2005, 2010, 2015)	Geodatabase, Zippped Shapefiles	5/22/2017
Division 5 Irrigated Lands (1993, 2000, 2005, 2010, 2015)	Geodatabase, Zippped Shapefiles	12/15/2016
Division 6 Irrigated Lands (1993, 2000, 2005, 2010, 2015)	Geodatabase, Zippped Shapefiles	2/2/2017
Division 6, Dist 47 Irrigated Lands (1952, 1956, 1976, 1987, 2001, 2005, 2010-2015)	Geodatabase, Zippped Shapefiles	9/21/2016
Division 7 Irrigated Lands (1993, 2000, 2005, 2010)	Geodatabase, Zippped Shapefiles	1/6/2016

National Hydrography Dataset (NHD)
Please download the latest version of the NHD from the USGS. (From the lefthand menu choose "Get Data" then "pre-staged subregions" to get Colorado's data in the appropriate format.)


Source Water Route Framework
Source Water Route Framework is a dataset which includes a measured, named streams from the National Hydrography Dataset (NHD). This 10.1 File Geodatabase also includes confluence points and an associated table of stream mile locations of those confluence points. This dataset is intended to be used to calculate stream mile location of features using the ArcGIS Linear Referencing tools. See included document for additional details.

Title/Description	File Type	Last Updated
Source Water Route Framework	10.1 File Geodatabase	05/23/2017

Instream Flow
Instream Flow data includes decreed and pending reaches and associated termini points, as well as natural lake levels.

Title/Description	File Type	Last Updated
Instream Flow Reaches - Decreed and pending reaches	Zipped Shapefile	3/30/2017
Instream Flow Termini - Decreed and pending termini points	Zipped Shapefile	3/30/2017
Natural Lake Levels - Decreed Lakes	Zipped Shapefile	1/20/2015