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

Alan D Lasker

I have worked for the USGS Arkansas Water Science Center since 1989.  Throughout my career, my primary responsibilities have been in water quality.  I have worked on numerous projects while here at the survey including the dissolved oxygen monitoring network for the White River, the Mississippi Embayment Study Unit, NASQAN studies at David D. Terry Lock and Dam 6, as well as other programs.