Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Rheannon M Hart


I am a hydrologist for the U.S. Geological Survey Arkansas Water Science Center and hold a Bachelor of Science and a Master of Science in Geology from the University of Arkansas at Little Rock. Since joining the USGS in 2001, I have been involved in collecting water levels and creating potentiometric surfaces for several aquifers within the State; characterizing the local recharge area of a spring that is habitat to the endangered Hell Creek Cave crayfish; developing the hydrogeologic framework for the Mississippi embayment aquifer system for use in the Mississippi Embayment Regional Aquifer Study (MERAS) groundwater flow model; developing a Hydrologic Simulation Program--FORTRAN (HSPF) model of Little Rock's drinking water supply watershed; developing a HSPF model of Conway's drinking water supply watershed; developing a PRMS model of the entire Landscape Conservation Cooperative Gulf Coastal Plains and Ozarks area simulating daily streamflow; developing dynamic parameters for land use and land cover data extending back to 1938 to aid in the development of the National Hydrologic Model; and developing a PRMS model, loosely coupled to a MODFLOW model, to determine the extent of the recharge area of the hot springs of the Hot Springs National Park. I also currently run the geophysical logging program within the center using our own geophysical logging truck and geophysical tools.