Hydrogeologic Website

I am pleased that you are visiting my website. I am an unaffiliated hydrogeologist and geologist. I do consulting and contract work. I also provide limited hydrologic and geologic information gratis. I can be contacted at ddunn@dunnhydrogeo.com.

As free time allows, I develop web pages on hydrologic and geologic topics. The sidebar menu (hamburger menu for phones) is a list of the pages created to date. Some of the pages are written in non-technical language. They are marked with NT. If you have a suggestion for a new web page, I would be pleased to add it to my to-do list. Send an email describing the proposed page. Feel free to ask questions and to provide comments on any of the existing pages.

I am especially interested in application of computer software to hydrologic and geologic problems. I am currently working with MODFLOW6 and MT3D-USGS. MODFLOW6 is the most recent version of a widely used groundwater flow computer model created and maintained by the United States Geological Survey. MT3D-USGS uses output data from MODFLOW6 to simulate the movement of dissolved substances (usually contaminants) within the groundwater model.

My most recently completed hydrogeologic project was a groundwater resource assessment. This work involved gathering and analyzing information on the capacity of water wells and springs.

My most recent gratis response to a viewer's inquiry was about mountain watershed hydrology.

Both of these recent tasks involved the hydrology of watersheds in the Rocky Mountains of the western United States. Although I have worked throughout much of the United States, much of my domestic work has been in the Rocky Mountain area out of offices in Denver, Colorado Springs, Durango, Grand Junction, and Bozeman. This work has been exceptionally interesting due to the complexity of the mountain geology and hydrology. The field work has been rewarding due to the scenery. I currently live at 7300 feet elevation adjacent to the Rampart Range in Colorado.


Darrel Dunn, Ph.D., PG

Consulting hydrogeologist-geologist