Lower Mississippi Gulf Water Science Center

Filter Total Items: 111
Sediment Sampling in Louisiana Photo
July 10, 2017




(Effective date will begin with samples received
by the Laboratory after October 1, 2017)

Ozark Plateaus Hydrogeologic Framework Illustration
July 5, 2017

The U.S. Geological Survey's Groundwater Resources Program (GWRP) is conducting an assessment of groundwater availability throughout the United States to gain a better understanding of the status of the Nation's groundwater resources and how changes in water use and climate may affect those resources. 


Sparta Aquifer Recovery Project Wells Map - Arkansas
July 5, 2017

The Sparta aquifer is Union County's only source of municipal and industrial ground water. Since development began in the early 1920's ground-water levels have declined more than 390 feet in some areas. As a result, Union was among five southern Arkansas counties designated as the state's first "Critical Ground Water Area" in 1996.

Partners include: Union County Water Conservation District, Environmental Protection Agency

Photo of Beaver Lake Diagnostic System Instrument - Arkansas
July 5, 2017

Short Title: Beaver Lake 3-D Modelin

Project Chief: Reed Green

Cooperator: Beaver Water District

Project Time Frame: October 2007 - present

Beaver Lake is a large, deep-storage reservoir located in the White River Basin in northwestern Arkansas and is considered a primary watershed of concern in Arkansas. As such, information is needed to assess water quality, especially nutrient enrichment, nutrient-algal relations, turbidity, and sediment issues within the system.

Map of Beaver Lake Watershed - Arkansas
July 5, 2017

Short Title: Beaver Lake Water Quality

Project Chief: Reed Green

Cooperator: Beaver Water District

Project Time Frame: 2000 - present

Beaver Lake, completed in 1963, is located in northwestern Arkansas and receives a majority of its water from three tributaries of the White River (White River, Middle Fork White River, and West Fork White River), Richland Creek, and War Eagle Creek.

Mississippi Corn Irrigation Photograph
July 5, 2017

Short Title: Ground-Water Data Network

Project Chief: Anna Nottmeier

Cooperators: Arkansas Natural Resources CommissionArkansas Geological SurveyCabot Water Works, Grand Prairie Water Users AssociationUnion County Conservation District

Project Time Frame: 1985 - present

Arkansas is the fourth largest user of ground water in the United States. Since the 1920’s, ground-water withdrawals have increased while water levels have declined. Long term water-level records are needed to evaluate the effects of climatic variations on the recharge and discharge from ground-water systems and are necessary in the construction and calibration of accurate ground-water flow models to allow prediction of future conditions. 

Hot Springs Arkansas Flood Warning System Gage Locations - Map
July 5, 2017

Short Title: Hot Springs Flood Warning System

Project Chief: Joseph Fleming

Cooperator: City of Hot Springs

Project Time Frame: 2008- present

In May 1990, a series of severe thunderstorms developed in the vicinity of Hot Springs with a total of 13.25 inches of rainfall measured at the National Park Service rainfall gage. Severe flooding caused by the excessive rainfall damaged numerous bridges and homes throughout the region and resulted in the loss of one life. Floodwaters 2 to 4 feet deep flowed through the historic downtown area of Hot Springs, causing extensive damage to private and public property.

Ozark forest photograph - Arkansas
July 3, 2017

Short Title: Lakes Maumelle and Winona

Project Chief: William Green

Cooperator: Central Arkansas Water

Project Time Frame: 1989 - present

Lakes Maumelle and Winona are water-supply reservoirs for the Little Rock and North Little Rock metropolitan areas in central Arkansas. In addition to water supply, the reservoirs are used for recreation and fish and wildlife habitat.

Middle Fork Saline River - Arkansas Map
July 3, 2017

Short Title: Middle Fork Study

Project Chief: William Baldwin

Cooperators: Hot Springs Village Property Owners Association, Arkansas Department of Environmental Quality, Arkansas Game and Fish Commission,Arkansas Naural Resources Commission, U.S. Bureau of Land Management, and U.S. Fish and Wildlife Service

Project Time Frame: 2003 - present

he Middle Fork of the Saline River flows through parts of Garland and Saline Counties in south-central Arkansas and is a tributary of the Saline River. The Middle Fork of the Saline River (hereafter referred to as the "Middle Fork") flows southeastward through Hot Springs Village and into Saline County, before its confluence with the Alum Fork of the Saline River.

North Alluvial Aquifer Modeling Area Map - Arkansas
July 3, 2017


Short Title: North Ground-Water Model

Project Chief: Phillip Hays

Cooperators: Arkansas Natural Resources Commission

Project Time Frame: 2005 - present

Several counties in eastern and southern Arkansas have been designated Critical Ground-Water Areas (areas where alluvial aquifer water levels dropped below 50 percent of the original saturated thickness or below the top of the Sparta Sand) by the Arkansas Natural Resources Commission. The expansion of the cones of depression and the consistent water-level declines indicate that ground-water withdrawals are occurring at a rate that is greater than the sustainable yield of the aquifer.

Ozark Plateaus National Water-Quality Assessment (NAWQA) Program Map
June 30, 2017

Short Title: Ozark Plateaus NAWQA

Project Chief: Billy Justus

Cooperator: U.S. Geological Survey National Water-Quality Assessment Program

Project Time Frame: 1991 - present

The Ozark Plateaus study unit is one of more than 50 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program. The long-term goals of this program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground-water resources, and to provide a sound, scientific understanding of the primary factors affecting the quality of these resources. The program will evaluate water quality at a wide range of spatial scales, from local to national, and will employ a multidisciplinary approach using physical, chemical and biological measurements to provide multiple lines of evidence with which to evaluate water quality.

Sediment Sampling Boat - Lower Mississippi Gulf - Photo
June 30, 2017

Short Title: Sediment Data Program

Project Chief: Dwight Lasker

Cooperator: U.S. Army Corps of Engineers - Memphis District

Project Time Frame: 1997 - present

Sediment concentrations and discharges in rivers and streams must be defined and monitored for effective water resource planning and water-quality assessments. An important part of the USGS mission is to provide scientific information to manage the water resources of the Nation. Long-term sediment records help to characterize geomorphologic and physical channel changes in watersheds, evaluate the effects of best management practices, and predict filling rates of reservoirs used for flood control, irrigation, and water supply.