Charles G Crawford, Ph.D.
Charles Crawford is a Scientist Emeritus (Hydrologist) with the U.S. Geological Survey (USGS), Ohio-Kentucky-Indiana Water Science Center (OKI WSC)
As a Scientist Emeritus he advises staff from the OKI WSC and USGS Water Mission Area on use of statistical methods for data analysis and is developing an approach for estimating uncertainty in stream temperature measurements. Charles joined the USGS in 1978 and has worked on a variety of water-quality investigations since. Prior to his retirement he was the Coordinator for Data Analysis and Statistics in the USGS Water Resources Mission Area, Earth System Processes Division, Water Resources Assessment Branch. Prior to that position he managed the USGS National Water Quality Assessment Project (NAWQA) and National Stream Quality Accounting Network (NASQAN) stream quality monitoring networks, a position he held from 2005 to 2015. From 2000 to 2005 he was a member of the NAWQA Pesticide National Synthesis Project Team where he helped develop the Watershed Regressions for Pesticide (WARP) model approach for estimating pesticide concentrations in streams. Before working for the NAWQA National Synthesis project, he was Chief of the NAWQA White River Basin Study for 10 years. He has served on the Indianapolis Department of Capital Asset Management Wet Weather Technical Advisory Committee, a work group organized by the International Life Sciences Institute for the U.S. Environmental Protection Agency (EPA) to provide input on strategies for determining pesticide exposure in drinking water, and an EPA lead interagency scientific working group charged with using National Water Quality Assessment Project pesticide data to help meet the goals of the Food Quality Protection Act. He is the author or co-author of over 60 articles and technical reports. He is also a co-author of the U.S. Geological Survey LOADEST program for estimating constituent loads in streams. Charles received the U.S. Department of the Interior (DOI) Superior Service Award in 1999 and the Department’s Meritorious Service Award in 2008. He was also a co-recipient of the USGS Eugene M. Shoemaker Communication Award in 2007. Charles has a B.A. degree in Biology from the University of Indianapolis and M.S. and Ph.D. degrees in Environmental Science from Indiana University.
Science and Products
Effects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
Suspended sediment in Trail Creek at Michigan City, Indiana
Recovery of benthic-invertebrate communities in the White River near Indianapolis, Indiana, USA, following implementation of advanced treatment of municipal wastewater
National Water-Quality Assessment Program - White River Basin
Estimation of suspended-sediment rating curves and mean suspended-sediment loads
Effects of advanced wastewater treatment on the quality of White River, Indiana
Effects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
Description of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
Effects of surface coal mining and reclamation on the geohydrology of six small watersheds in West-Central Indiana
Suspended-sediment characteristics of Indiana streams, 1952-84
Effects of surface coal mining and reclamation on the geohydrology of six small watersheds in west-central Indiana
Description of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
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Effects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
The City of Indianapolis has constructed state-of-the-art advanced municipal wastewater-treatment systems to enlarge and upgrade the existing secondary-treatment processes at its Belmont and Southport treatment plants. These new advanced-wastewater-treatment plants became operational in 1983. A nonparametric statistical procedure--a modified form of the Wilcoxon-Mann-Whitney rank-sum test--was useAuthorsCharles G. Crawford, David J. WangsnessSuspended sediment in Trail Creek at Michigan City, Indiana
Trail Creek is a small (54.1-square-mile drainage area) tributary of Lake Michigan located in northwestern Indiana. A harbor at the mouth of the stream has experienced excessive sediment deposition. A study was done to investigate the suspended-sediment characteristics of Trail Creek. The study included analysis of suspended-sediment concentration and particle-size data, and estimates of annual suAuthorsCharles G. Crawford, David V. JacquesRecovery of benthic-invertebrate communities in the White River near Indianapolis, Indiana, USA, following implementation of advanced treatment of municipal wastewater
The City of Indianapolis, Indiana, USA, completed construction of advanced-wastewater-treatment systems to enlarge and upgrade existing secondary-treatment processes at the City’s two municipal wastewater-treatment plants in 1983. These plants discharge their effluent to the White River. A study was begun in 1981 to evaluate the effects of municipal wastewater on the quality of the White River neaAuthorsCharles G. Crawford, David J. WangsnessNational Water-Quality Assessment Program - White River Basin
No abstract available.AuthorsDavid V. Jacques, Charles G. CrawfordEstimation of suspended-sediment rating curves and mean suspended-sediment loads
Suspended-sediment loads are often estimated from an empirical relation between suspended-sediment load (L) and streamflow (S). This relation is usually defined as a power function, L = aSh, and is referred to as a suspended-sediment rating curve. This function can be formulated as either a linear or non-linear model to find the solution of the rating-curve parameters (a and b). Formulation of theAuthorsCharles G. CrawfordEffects of advanced wastewater treatment on the quality of White River, Indiana
In 1983, the City of Indianapolis, Indiana, completed construction of advanced wastewater treatment (AWT) systems to enlarge and upgrade its existing Belmont Road and Southport Road secondary treatment plants. A nonparametric statistical procedure, a modified form of the Wilcoxon-Mann-Whitney rank-sum test, was used to test for trends in water quality at two upstream and two downstream sites on WhAuthorsCharles G. Crawford, David J. WangsnessEffects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
No abstract available.AuthorsCharles G. Crawford, David J. WangsnessDescription of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
This report describes the physical and human environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds selected for study of the hydrologic effects of surface coal mining. The report summarizes information on the geology, geomorphology, soils, climate, hydrology, water use, land use, population, and coal-mining history of Clay, Owen, Sullivan, and Vigo CounAuthorsJeffrey D. Martin, Charles G. Crawford, Richard F. Duwelius, Danny E. RennEffects of surface coal mining and reclamation on the geohydrology of six small watersheds in West-Central Indiana
Six small watersheds in west-central Indiana were selected for study of the hydrologic effects of surface coal mining and reclamation. The watersheds include mined and reclaimed, mined and unreclaimed, and unmined agricultural land uses and are each less than 3 square miles in area. Surface-water, ground-water, and meteorologic data for the 1981 and 1982 water years were used to describe and compaAuthorsJeffrey D. Martin, Richard F. Duwelius, Charles G. CrawfordSuspended-sediment characteristics of Indiana streams, 1952-84
Suspended sediment concentration and discharge data were collected at seven daily record stations and 70 partial record stations in Indiana during 1952-84. Median suspended sediment concentrations ranged from 24 to 61 mg/L at daily record stations; concentrations ranged from 6 to 539 mg/L at partial record stations. Most suspended sediment transported in Indiana streams is silt and clay size (partAuthorsCharles G. Crawford, L.J. MansueEffects of surface coal mining and reclamation on the geohydrology of six small watersheds in west-central Indiana
The watersheds studied include mined and reclaimed; mined and unreclaimed; and unmined, agricultural land uses, and are each < 3 sq mi in area. Surface water, groundwater, and meteorologic data for the 1981 and 1982 water years were used to describe and compare hydrologic systems of the six watersheds and to identify hydrologic effects of mining and reclamation. Peak discharges were greater at theAuthorsJeffrey D. Martin, Richard F. Duwelius, Charles G. CrawfordDescription of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
Information on the geology, geomorphology, soils, climate, hydrology, water use, land use, population, and coal mining history of Clay, Owen, Sullivan, and Vigo Counties in Indiana is summarized. Site-specific information is given on the morphology , geology, soils, land use, coal mining history, and hydrologic instrumentation of the six watersheds which are each less than 3 sq mi in area. The WabAuthorsJeffrey D. Martin, Charles G. Crawford, R.F. Duwelius, D.E. Renn