Geology topics

C.E. McConaughy

Publications and source records attributed to C.E. McConaughy.

6 recordsLinked to original sources

USGS1988

Water Resources Data for California, Water Year 1986. Volume 1. Southern Great Basin from Mexican Border to Mono Lake Basin, and Pacific Slope Basins from Tijuana River to Santa Maria River

Water resources data for the 1986 water year for California consist of records of stage, discharge, and water quality of streams; stage and contents in lakes and reservoirs; and water levels and water quality in wells. Volume 1 contains discharge records for 144 gaging stations; stage and contents for 15 lakes and reservoirs; watet quality for 21 streams. Also included are crest-stage partial-record stations, 3 miscellaneous measurement sites, and 5 water-quality partial-record stations. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in California.

California↗

USGS1988

Water Resources Data for California, Water Year 1987. Volume 1. Southern Great Basin from Mexican Border to Mono Lake Basin, and Pacific Slope Basins from Tijuana River to Santa Maria River

Water resources data for the 1987 water year for California consist of records of stage, discharge, and water quality of streams; stage and contents in lakes and reservoirs; and water levels and water quality in wells. Volume 1 contains discharge records for 134 gaging stations; stage and contents for 16 lakes and reservoirs; and water quality for 16 streams. Also included are 10 crest-stage partial-record stations, 3 miscellaneous measurement sites, and 10 water-quality partial-record stations. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in California.

California↗

USGS1988

Sediment loads in the Ventura River Basin, Ventura County, California, 1969-81

To estimate the replenishment of beach sands by fluvial transport from the Ventura River, California sediment data collected during a 12-year period (1969-81) were used to develop relations between bedload and coarse-suspended-sediment loads and streamflow. These relations were used to calculate coarse-sediment and total-sediment loads from the Ventura River, and to assess the effects of major storms on sediment transport. Sediment data collected on an unregulated tributary over a 12-year period were used to assess effects of dam construction on sediment loads and to identify major sediment source areas in the Ventura basin. Total-sediment load from the Ventura River for the 12 years of data collection was 12,800,000 tons, of which 5,100,000 tons, or 40%, consisted of coarse material potentially available for replenishment of beach sands. Suspended-sediment transport was the dominant process supplying sediment to the coast, accounting for more than 98% of the coarse-sediment load. Higher streamflows carried proportionately more coarse-suspended sediment than low flows. Major storm events transported more than 96% of both total-sediment and course-sediment annual loads during three high-flow years. The sequence of storm events may influence storm-period sediment transport, as sediment removed rapidly during high flows is gradually replenished by hillslope processes. The sediment yield of the unregulated part of the basin was higher than that of the regulated part. Consideration of the trap efficiencies of reservoirs in the basin, however, indicates that actual yields may be highest in areas affected by impoundments. (USGS)

Water-Resources Investigations Report↗

USGS1987

Water Resources Data for California, Water Year 1985. Volume 1. Southern Great Basin from Mexican Border to Mono Lake Basin, and Pacific Slope Basins from Tijuana River to Santa Maria River

Water resources data for the 1985 water year for California consists of records of stage, discharge, and water quality of streams; stage and contents in lakes and reservoirs; and water levels and water quality in wells. Volume 1 contains discharge records for 150 gaging stations; stage and contents for 17 lakes and reservoirs; water quality for 23 streams. Also included are 10 crest-stage partial-record stations, three miscellaneous measurement sites, and one waterquality partial-record station. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in California.

California↗

USGS1986

Rock riprap design for protection of stream channels near highway structures; Volume 2, Evaluation of Riprap design procedures

In volume 2, seven procedures now being used for design of rock riprap installations were evaluated using data from 26 field sites. Four basic types of riprap failures were identified: Particle erosion, translational slide, modified slump, and slump. Factors associated with riprap failure include stone size , bank side slope, size gradation, thickness, insufficient toe or endwall, failure of the bank material, overtopping during floods, and geomorphic changes in the channel. A review of field data and the design procedures suggests that estimates of hydraulic forces acting on the boundary based on flow velocity rather than shear stress are more reliable. Several adjustments for local conditions, such as channel curvature, superelevation, or boundary roughness, may be unwarranted in view of the difficulty in estimating critical hydraulic forces for which the riprap is to be designed. Success of the riprap is related not only to the appropriate procedure for selecting stone size, but also to the reliability of estimated hydraulic and channel factors applicable to the site. (See also W89-04910) (Author 's abstract)

Water-Resources Investigations Report↗

USGS1982

Reconnaissance water-balance study of Lake Gregory, California

A study was made to determine the magnitude and distribution of the surface-water inflow and outflow (water balance) of the Lake Gregory basin in southern California. Data were collected from April 1979 through June 1981. Runoff during the study period varied greatly with the majority of inflow occurring between December and May of each year. During 1980 and 1981 (through July 1981) precipitation totals at Lake Gregory were the maximum and minimum for the 19-year period of record. The average annual precipitation for the 3-year period 1979-81 was 47.4 inches, almost 10 inches greater than the long-term average, 1962-81, of 37.8 inches. Surface-water runoff in the Lake Gregory basin is highly dependent on annual precipitation, and total outflow for the 1980 water year and partial total for the 1981 (through June) water year was 7,230 acre-feet and 400 acre-feet, respectively. (USGS)

Open-File Report↗