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David E Ladd

David E Ladd is a Hydrologist in the Lower Mississippi-Gulf Water Science Center, Duty Station: Nashville, Tennesse.

Science and Products

At-site flood frequency for 139 urban streamgages in Tennessee and parts of Alabama, Georgia, Mississippi, North Carolina, and South Carolina using data through water year 2022

This dataset contains site information and results of flood-frequency analysis for 139 urban streamflow gaging stations (streamgages) operated by the U.S. Geological Survey (USGS) in Tennessee and parts of Alabama, Georgia, Mississippi, North Carolina, and South Carolina. Developed imperviousness in the basins, based on the 2011 National Land Cover Database, was at least 10 percent (Homer and othe
By
Lower Mississippi-Gulf Water Science Center

Soil-Water-Balance forecasted climate model output for simulations of water budget components in the Mississippi Embayment Regional Aquifer System, 2019 to 2055

This data release provides 64 forecasted water budget simulations for the Mississippi Embayment Regional Aquifer System (MERAS) during the period 2019 to 2055. Gridded daily data (1-kilometer resolution) include net infiltration (potential groundwater recharge), rejected net infiltration, interception, runoff, runoff outside (runoff that cannot be routed downslope), irrigation, actual evapotranspi
By
Lower Mississippi-Gulf Water Science Center

12-Digit Hydrologic Unit Outlet Locations for Selected Watersheds Draining to the Gulf of Mexico in the South-Central and Southeastern United States, Derived from the USGS Watershed Boundary Dataset (dated August 13, 2020) and NHDPlus version 2.1

This USGS data release includes a shapefile of outlet point locations for 12-digit hydrologic units (HU12s) from the Watershed Boundary Dataset (WBD), dated August 13, 2020 (U.S. Geological Survey and others, 2020), draining to the Gulf of Mexico in the south-central and southeastern United States. The outlet locations were derived by combining the WBD boundaries with flow direction grids from the
By
Lower Mississippi-Gulf Water Science Center, Gulf of Mexico

OFR 2021-1008 MODEL ARCHIVE: Soil-Water-Balance model developed to simulate net infiltration and irrigation water use for the Mississippi Embayment Regional Aquifer System, 1915 to 2018

This model archive makes available the calibrated Soil-Water-Balance (SWB) model used to simulate potential recharge for the Mississippi Alluvial Aquifer for 1915 to 2018. The model was calibrated using monthly values of evapotranspiration and annual values of runoff and recharge for 19 drainage basins selected from within or nearby the Mississippi Alluvial Aquifer system. The calibrated SWB model
By
Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

OFR 2021-1008 MODEL OUTPUT: Soil-Water-Balance net infiltration and irrigation water use output datasets for the Mississippi Embayment Regional Aquifer System, 1915 to 2018

This data release includes four sets of gridded annual net infiltration (groundwater recharge) and irrigation water use data sets for the Mississippi Embayment Regional Aquifer System (MERAS).Also included are gridded water balance component data sets of precipitation, runoff, actual evapotranspiration, and soil-water storage for 2000 to 2018. The net infiltration, irrigation, runoff, actual evapo
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Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Field Parameters and Water Levels from Monitoring Sites at Jamestown Island, Virginia, 2016 - 2018

As part of a study to analyze the effects of sea-level rise on groundwater resources of Colonial National Historical Park, a monitoring network was established on Historic Jamestown Island, Virginia, to evaluate current levels of and changes in groundwater elevation and water quality. The monitoring network includes 45 wells and piezometers, 3 marsh sites, and 2 surface-water sites distributed acr
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Virginia and West Virginia Water Science Center

Generalized regions of the Mississippi Alluvial Plain

As part of the U.S. Geological Survey (USGS) Water Availability and Use Science Program study of the Mississippi Alluvial Plain (MAP), a shapefile representing seven generalized regions of the MAP extent as defined by Painter and Westerman (2018) was compiled. The generalized regions provide a framework for analysis, visualization, and regional comparisons of local data within the MAP. Regions nor
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Lower Mississippi-Gulf Water Science Center

Proposed locations for expansion of the West Virginia streamgaging network

The U.S. Geological Survey (USGS) and the West Virginia Water Gaging Council have proposed an expansion to the existing West Virginia streamgage network. As of December 18, 2018, the USGS operates a network of 149 real-time streamgages in West Virginia. This geospatial dataset provides the approximate locations of 39 proposed streamgages. These streamgages include 31 presently operated by the West
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Virginia and West Virginia Water Science Center

Streamflow and fish community diversity data for use in developing ecological limit functions for the Cumberland Plateau, northeastern Middle Tennessee and southwestern Kentucky, 2015

This geospatial dataset includes one point feature class file and associated FGDC-compliant metadata representing datasets to support development of ecological limit functions for the Cumberland Plateau in northeastern Middle Tennessee and southeastern Kentucky. Information contained within the dataset represents values of basin characteristics, estimates of streamflow characteristics, measures o
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Lower Mississippi-Gulf Water Science Center
Hydrography Community Call 2/27/2024 Thumbnail Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee
Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee
Hydrography Community Call 2/27/2024 Thumbnail

Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee

Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee

Presenters are Rebecca Ransom and David Ladd with the USGS Lower Mississippi Gulf Water Science Center in Nashville, TN. 

By
Core Science Systems Mission Area, National Geospatial Program, National Geospatial Program, 3D Hydrography Program
Hydrography Community Call 2/27/2024 Thumbnail

Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee

Development of a Geographic Information System Methodology for the Public Drinking Water Source Water Assessment Program in Tennessee

Presenters are Rebecca Ransom and David Ladd with the USGS Lower Mississippi Gulf Water Science Center in Nashville, TN. 

By
Core Science Systems Mission Area, National Geospatial Program, National Geospatial Program, 3D Hydrography Program

Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area

The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use, economic, and other related models are being combined with field surveys an
Authors
Stephen, M. Westenbroek, Martha G. Nielsen, David E. Ladd
By
Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Documentation of a Soil-Water-Balance Model to estimate recharge to Blue Ridge, Piedmont, and Mesozoic Basin fractured-rock aquifers, Fauquier County, Virginia, 1996 through 2015

This report documents a Soil-Water-Balance (SWB) model that was developed for an area covering the Blue Ridge, Piedmont, and Mesozoic basin fractured-rock aquifers in Fauquier County, Virginia, for the calendar years 1996–2015. The SWB model includes an area of 1,498 square miles, divided into 1,076-square-foot (100-square-meter) grid cells on which daily groundwater recharge was estimated using e
Authors
Kurt J. McCoy, David E. Ladd
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Water Resources Mission Area, Virginia and West Virginia Water Science Center, Lower Mississippi-Gulf Water Science Center

Hydrologic budget and conditions of Permian, Pennsylvanian, and Mississippian aquifers in the Appalachian Plateaus physiographic province

In response to challenges to groundwater availability posed by historic land-use practices, expanding development of hydrocarbon resources, and drought, the U.S. Geological Survey Groundwater Resources Program began a regional assessment of the Appalachian Plateaus aquifers in 2013 that incorporated a hydrologic landscape approach to estimate all components of the hydrologic system: surface runoff
Authors
Kurt J. McCoy, Richard M. Yager, David L. Nelms, David E. Ladd, Jack Monti,, Mark D. Kozar
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Water Resources Mission Area, Virginia and West Virginia Water Science Center

Methods for estimating water consumption for thermoelectric power plants in the United States

Water consumption at thermoelectric power plants represents a small but substantial share of total water consumption in the U.S. However, currently available thermoelectric water consumption data are inconsistent and incomplete, and coefficients used to estimate consumption are contradictory. The U.S. Geological Survey (USGS) has resumed the estimation of thermoelectric water consumption, last don
Authors
Timothy H. Diehl, Melissa Harris, Jennifer C. Murphy, Susan S. Hutson, David E. Ladd
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Water Resources Mission Area, Water Availability and Use Science Program, Lower Mississippi-Gulf Water Science Center

If the creeks don't rise: the May 2010 Flood in Nashville

The aftermath, recovery, and lessons of the future following a major flood that inundated the greater Nashville area one year ago are the subjects of this article. The authors discuss what led up to the event, its impacts, and what, if anything, can be done to prevent or diminish the reoccurrence of such flooding in the future.
Authors
Rodney R. Knight, William J. Wolfe, David E. Ladd
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Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center

Streamflow-Characteristic Estimation Methods for Unregulated Streams of Tennessee

Streamflow-characteristic estimation methods for unregulated rivers and streams of Tennessee were developed by the U.S. Geological Survey in cooperation with the Tennessee Department of Environment and Conservation. Streamflow estimates are provided for 1,224 stream sites. Streamflow characteristics include the 7-consecutive-day, 10-year recurrence-interval low flow, the 30-consecutive-day, 5-year
Authors
George S. Law, Gary D. Tasker, David E. Ladd
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Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center

Tennessee StreamStats: A Web-Enabled Geographic Information System Application for Automating the Retrieval and Calculation of Streamflow Statistics

The U.S. Geological Survey (USGS) provides streamflow and other stream-related information needed to protect people and property from floods, to plan and manage water resources, and to protect water quality in the streams. Streamflow statistics provided by the USGS, such as the 100-year flood and the 7-day 10-year low flow, frequently are used by engineers, land managers, biologists, and many othe
Authors
David E. Ladd, George S. Law
By
Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center, StreamStats

Fate and transport of petroleum hydrocarbons in soil and ground water at Big South Fork National River and Recreation Area, Tennessee and Kentucky, 2002-2003

In 2002 and 2003, the U.S. Geological Survey (USGS), by agreement with the National Park Service (NPS), investigated the effects of oil and gas production operations on ground-water quality at Big South Fork National River and Recreation Area (BISO) with particular emphasis on the fate and transport of petroleum hydrocarbons in soils and ground water. During a reconnaissance of ground-water-qualit
Authors
Shannon D. Williams, David E. Ladd, James Farmer

Hydrogeology and ground-water-flow simulation in the former airfield area of Naval Support Activity Mid-South, Millington, Tennessee

Naval Support Activity Mid-South is a Department of the Navy base located in Millington, Tennessee. The facility was home to the Naval Aviation Technical Training Center from 1943 until 1996. As part of the Base Closure and Realignment Act of 1990, the primary training mission of the facility was realigned and most of the northern part of the base, referred to as the Northside and consisting prima
Authors
Connor J. Haugh, John K. Carmichael, David E. Ladd
By
Water Resources Mission Area, Lower Mississippi-Gulf Water Science Center

Hydrogeologic framework and simulation of ground-water flow and travel time in the shallow aquifer system in the area of Naval Support Activity Memphis, Millington, Tennessee

Naval Support Activity (NSA) Memphis is a Department of the Navy facility located at the City of Millington, Tennessee, about 5 miles north of Memphis. Contaminants have been detected in surface-water, sediment, and ground-water samples collected at the facility. As part of the Installation Restoration Program, the Navy is considering remedial-action options to prevent or lessen the effect of grou
Authors
James L. Robinson, John K. Carmichael, Keith J. Halford, David E. Ladd

Science and Products