ON-010M Colorado Groundwater Atlas (Map) - v20210304 Details This map is comprised of statewide GIS data compiled as of 04 March 2021. Online GIS resource. ON-010M To the map: ON-010D Colorado Groundwater Atlas (Map) – v20210304 Supersedes online map OF-06-01 – Ground Water Atlas of Colorado QUICK LINKS TO: Main Atlas landing page — Table of Contents, linked list of Tables and Figures, and the primary Atlas contents. Atlas Bibliography and Glossary — extensive Bibliography for the project along with a Glossary of groundwater-related terms. ON-010D Colorado Groundwater Atlas (Data) – v20210304 — comprehensive GIS dataset including all aspects of available groundwater data. Full metadata is also included. Version Information: — v20210304 — The ON-010-02M Colorado Statewide Alluvial Aquifer layer was added to the original v20200520 dataset. This layer is found in the “Layer List” under “Statewide” then “Colorado Alluvial Aquifer” on the ON-010D Colorado Groundwater Atlas (Map) – v20210304 — v20200520 — The original GIS dataset and map for the ON-010 Colorado Groundwater Atlas. Citations Barkmann, Peter E., Lauren D. Broes, Martin J. Palkovic, John C. Hopkins, Kenneth Swift Bird, Lesley A. Sebol, and F. Scot Fitzgerald. “ON-010D Colorado Groundwater Atlas Data - v20210304.” Geohydrology. ON-010D Colorado Groundwater Atlas, 20 May 2020. Colorado Geological Survey, Golden, CO. https://coloradogeologicalsurvey.org/water/colorado-groundwater-atlas-map/