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Apple snail remains after being preyed upon by a raccoon
August 1, 2017

The maculata apple snail (Pomacea maculata) has invaded many coastal and some inland areas in south Louisiana. Reports have indicated that the freshwater snails have significantly reduced the amount of submerged aquatic vegetation (SAV) and floating leaved vegetation (FLV) available for waterfowl and other wildlife.

Fig. 1. A flow cytometric histogram of larval Grass Carp cells
August 1, 2017

Differentiating diploids from triploids at the earliest life stage possible allows for a more efficient use of resources including production time and rearing space. Thus, a reliable flow cytometric (FCM) method has been developed to discriminate triploids from diploids at the larval stage. In order to help simplify the process of differentiating triploids from diploids, we propose a simple website tool to help predict the number of triploid larvae from a spawn after FCM processing.

Map of Ten Thousand Islands, Florida
August 1, 2017

Mangroves have decreased worldwide due to human development, climate change and other forces. In southwest Florida, tremendous growth and development pressure has resulted in appreciable losses in mangrove wetlands.

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.