Charles G Crawford, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 68
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 use
Authors
Charles G. Crawford, David J. Wangsness
Suspended 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 su
Authors
Charles G. Crawford, David V. Jacques
Recovery 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 nea
Authors
Charles G. Crawford, David J. Wangsness
National Water-Quality Assessment Program - White River Basin
No abstract available.
Authors
David V. Jacques, Charles G. Crawford
Estimation 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 the
Authors
Charles G. Crawford
Effects 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 Wh
Authors
Charles G. Crawford, David J. Wangsness
Effects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
No abstract available.
Authors
Charles G. Crawford, David J. Wangsness
Description 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 Coun
Authors
Jeffrey D. Martin, Charles G. Crawford, Richard F. Duwelius, Danny E. Renn
Effects 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 compa
Authors
Jeffrey D. Martin, Richard F. Duwelius, Charles G. Crawford
Suspended-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 (part
Authors
Charles G. Crawford, L.J. Mansue
Effects 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 the
Authors
Jeffrey D. Martin, Richard F. Duwelius, Charles G. Crawford
Description 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 Wab
Authors
Jeffrey D. Martin, Charles G. Crawford, R.F. Duwelius, D.E. Renn
Science and Products
Filter Total Items: 68
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 use
Authors
Charles G. Crawford, David J. Wangsness
Suspended 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 su
Authors
Charles G. Crawford, David V. Jacques
Recovery 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 nea
Authors
Charles G. Crawford, David J. Wangsness
National Water-Quality Assessment Program - White River Basin
No abstract available.
Authors
David V. Jacques, Charles G. Crawford
Estimation 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 the
Authors
Charles G. Crawford
Effects 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 Wh
Authors
Charles G. Crawford, David J. Wangsness
Effects of advanced treatment of municipal wastewater on the White River near Indianapolis, Indiana: Trends in water quality, 1978-86
No abstract available.
Authors
Charles G. Crawford, David J. Wangsness
Description 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 Coun
Authors
Jeffrey D. Martin, Charles G. Crawford, Richard F. Duwelius, Danny E. Renn
Effects 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 compa
Authors
Jeffrey D. Martin, Richard F. Duwelius, Charles G. Crawford
Suspended-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 (part
Authors
Charles G. Crawford, L.J. Mansue
Effects 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 the
Authors
Jeffrey D. Martin, Richard F. Duwelius, Charles G. Crawford
Description 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 Wab
Authors
Jeffrey D. Martin, Charles G. Crawford, R.F. Duwelius, D.E. Renn