Discharge data collection and analysis and implications for surface-water/groundwater interactions in the lower Las Vegas Wash, Clark County, Nevada, 2016–18
نویسندگان
چکیده
First posted May 25, 2021 For additional information, contact: Director,Nevada Water Science CenterU.S. Geological Survey2730 N. Deer Run RoadCarson City, Nevada 95819 The lower Las Vegas Wash represents the terminal surface drainage for Valley in southern Nevada. In 1997, high concentrations of perchlorate were found seeps contributing to discharge this area and traced an industrial byproduct from manufacturing operations mid-1900s at nearby Basic Magnesium, Incorporated, plant. discovery prompted a water-resources investigation by Department Environmental Protection (NDEP) develop understanding groundwater flow system dynamics associated with surface-water Wash. 2016, U.S. Survey was tasked evaluating near locations where had been detected. Results study will assist NDEP identifying areas interaction help guide future cleanup monitoring efforts.Streamflow is evaluated along 4-mile section (referred as Wash) used describe interactions between channel bank sediments. Continuous data collected during 2-year period (2016–18) 5 gaging stations Additionally, multiple discrete measurements 4 synoptic sampling events 2016 2018.A diurnal pattern, controlled upstream treated wastewater releases, provided high- low-discharge markers that are compute downstream time-lags peak minimum flows. Computed establish travel times measurement sites, difference time-lagged hydrographs increases (gain) or decreases (loss) measurements. Tributary inflows discharge, remediation efforts, periodic flooding rainfall runoff included computing differences discharge. Differences delineated reaches define daily, monthly, yearly streamflow gains losses adjacent Construction channel-stabilization weirs have occurred since completion change may limit results analyzed; however, methods processes described report can be evaluations.
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ژورنال
عنوان ژورنال: Scientific Investigations Report
سال: 2021
ISSN: ['2328-0328', '2332-5607', '2328-031X']
DOI: https://doi.org/10.3133/sir20215034