Preliminary integrated geologic map databases for the United States - Western states: California, Nevada, Arizona, Washington, Oregon, Idaho, and Utah

Ludington, Steve; Moring, Barry C.; Miller, Robert J.; Flynn, Kathryn; Hopkins, Melanie J.; Stone, Paul; Bedford, David R.; Haxel, Gordon A.

doi:10.3133/ofr20051305

Cited by 59 publications

(62 citation statements)

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“…The Tucson Mountains are primarily Late Cretaceous to Early Tertiary andesite and dacite, and alluvium from this range is constrained to the west of the Santa Cruz River and does not underlay our study catchments (Ludington et al, 2007). The Catalina and Rincon Mountains are primarily composed of Late Cretaceous to Early Tertiary granite and pegmatite, and to a lesser extent early Proterozoic to Tertiary gneiss and mylonite.…”

Section: Study Region and Study Period Overviewmentioning

confidence: 98%

“…The Catalina and Rincon Mountains are primarily composed of Late Cretaceous to Early Tertiary granite and pegmatite, and to a lesser extent early Proterozoic to Tertiary gneiss and mylonite. Late Pliocene to early Pleistocene alluvial fans comprise the Catalina and Rincon Mountain foothills, and quaternary granitic alluvium derived from these two ranges makes up the basin fill east of the Santa Cruz River (Ludington et al, 2007).…”

Section: Study Region and Study Period Overviewmentioning

confidence: 99%

“…The densities of roads, the stormwater drainage system (pervious + impervious channels) and pervious and impervious channels were determined by dividing the total length of each by the catchment area. Finally, we used data from the U.S. Geological Survey (Ludington et al, 2007) and the SSRUGO database (Natural Resources Conservation Service, 2008) to identify the underlying geologic material and soil types at our study sites. Our study sites are not single land cover catchments.…”

Section: Catchment Characterizationmentioning

confidence: 99%

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Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments

Gallo

Brooks

Lohse

et al. 2013

Journal of Hydrology

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cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments" (2013 Recharge of urban runoff to groundwater as a stormwater management practice has gained importance in semi-arid regions where water resources are scarce and urban centers are growing. Despite this trend, the importance of land cover in controlling semi-arid catchment runoff quantity and quality remains unclear. Here we address the question: How do land cover characteristics control the amount and quality of storm runoff in semi-arid urban catchments? We monitored summertime runoff quantity and quality from five catchments dominated by distinct urban land uses: low, medium, and high density residential, mixed use, and commercial. Increasing urban land cover increased runoff duration and the likelihood that a rainfall event would result in runoff, but did not increase the time to peak discharge of episodic runoff. The effect of urban land cover on hydrologic responses was tightly coupled to the magnitude of rainfall. At distinct rainfall thresholds, roads, percent impervious cover and the stormwater drainage network controlled runoff frequency, runoff depth and runoff ratios. Contrary to initial expectations, runoff quality did not vary in repose to impervious cover or land use. We identified four major mechanisms controlling runoff quality: (1) variable solute sourcing due to land use heterogeneity and above ground catchment connectivity; (2) the spatial extent of pervious and biogeochemically active areas; (3) the efficiency of overland flow and runoff mobilization; and (4) solute flushing and dilution. Our study highlights the importance of the stormwater drainage systems characteristics in controlling urban runoff quantity and quality; and suggests that enhanced wetting and in-stream processes may control solute sourcing and retention. Finally, we suggest that the characteristics of the stormwater drainage system should be integrated into stormwater management approaches.

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Section: Study Region and Study Period Overviewmentioning

confidence: 98%

Section: Study Region and Study Period Overviewmentioning

confidence: 99%

Section: Catchment Characterizationmentioning

confidence: 99%

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Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments

Gallo

Brooks

Lohse

et al. 2013

Journal of Hydrology

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“…We resolve the Coulomb stress changes on the projected surfaces of the Whittier and Chino faults in Figures 8E-F, under the assumption that they are right lateral-reverse faults Ludington et al 2007). We used a rake of 133°, the same as nodal plane 1.…”

Section: Static Stress Changementioning

confidence: 99%

Preliminary Report on the 29 July 2008 Mw 5.4 Chino Hills, Eastern Los Angeles Basin, California, Earthquake Sequence

Hauksson

Felzer

Given

et al. 2008

Seismological Research Letters

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“…3.9. Mapping of the Paso Robles Fm provided by (Ludington et al, 2005), 10 m resolution topographic data provided by the USGS National Elevation Database. Fig.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Lithology on the Forms of Hillslopes and Drainage Basins in Soil Mantled Landscapes

Johnstone¹

2018

Preprint

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Preliminary integrated geologic map databases for the United States - Western states: California, Nevada, Arizona, Washington, Oregon, Idaho, and Utah

Cited by 59 publications

References 0 publications

Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments

Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments

Preliminary Report on the 29 July 2008 Mw 5.4 Chino Hills, Eastern Los Angeles Basin, California, Earthquake Sequence

The Influence of Lithology on the Forms of Hillslopes and Drainage Basins in Soil Mantled Landscapes

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