Item talk:Q228576

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Project",
 "url": "https://www.usgs.gov/centers/california-water-science-center/science/warren-subbasin-groundwater-recharge",
 "headline": "Warren Subbasin Groundwater Recharge",
 "datePublished": "November 28, 2018",
 "author": [
   {
     "@type": "Person",
     "name": "Gregory Mendez",
     "url": "https://www.usgs.gov/staff-profiles/gregory-mendez",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-9955-3726"
     }
   },
   {
     "@type": "Person",
     "name": "Tracy Nishikawa",
     "url": "https://www.usgs.gov/staff-profiles/tracy-nishikawa",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-7348-3838"
     }
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "The Hi Desert Water District (HDWD) implemented an artificial groundwater recharge program in early 1995 to reverse the decline of groundwater levels in the Warren subbasin. Groundwater levels declined as much as 300 feet from 1940 to1994, owing to increased pumping."
   },
   {
     "@type": "TextObject",
     "text": "In 2011, the California Regional Water Quality Control Board passed a resolution prohibiting the discharge of septic systems in parts of the Yucca Valley. In response, the HDWD implemented a Groundwater Reuse and Replenishment Project (GRRP). When completed, this project will return about 2,000 acre-feet of recycled water to the aquifer."
   },
   {
     "@type": "TextObject",
     "text": "The Hi Desert Water District (HDWD) provides water service to about 10,000 customers in the areas of Yucca Valley, Yucca Mesa, and some unincorporated areas of San Bernardino County. The study area is the 19 square mile Warren subbasin of the Morongo groundwater basin (approximately 100 miles east of Los Angeles, California)."
   },
   {
     "@type": "TextObject",
     "text": "The artificial groundwater recharge program introduced imported surface water to recharge ponds to replenish ground water in the underlying aquifer and, in response, water levels recovered as much as 250 feet in the vicinity of the recharge ponds. However, since the implementation of the artificial recharge program, groundwater nitrate concentrations have shown a marked increase from 10 milligrams per liter to more than 110 milligrams per liter. Prior to the water-level rise, nitrate concentrations were near background levels, indicating that the nitrates had not reached the water table or that denitrification was occurring in the unsaturated zone. The increase in nitrate concentrations in Warren subbasin ground waters is attributed to the entrainment of septage by rising water levels."
   },
   {
     "@type": "TextObject",
     "text": "Principle Tasks"
   },
   {
     "@type": "TextObject",
     "text": "Objectives"
   },
   {
     "@type": "TextObject",
     "text": "Residents and businesses in Yucca Valley, CA rely primarily on septic systems to treat their wastewater. The Hi-Desert Water District (HDWD) is constructing a sewer system and wastewater treatment plant (WWTP) as part of the GRRP, initially serving the West, Midwest, Mideast, Northeast, and East hydrogeologic units of the Warren subbasin. Monitoring of groundwater with high nitrate is needed to help evaluate the rate of movement of recharged water away from the GRRP and to help mitigate existing nitrogen plumes. Title 22 regulations stipulate that the fate of organic carbon discharged from the GRRP spreading ponds be monitored."
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "California Water Science Center",
   "url": "https://www.usgs.gov/centers/california-water-science-center"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "Science Technology"
   },
   {
     "@type": "Thing",
     "name": "San Bernardino County"
   },
   {
     "@type": "Thing",
     "name": "Water Quality"
   },
   {
     "@type": "Thing",
     "name": "Managed aquifer recharge"
   },
   {
     "@type": "Thing",
     "name": "wastewater"
   },
   {
     "@type": "Thing",
     "name": "Artificial Recharge"
   },
   {
     "@type": "Thing",
     "name": "Sustainable Groundwater Management Act (SGMA)"
   },
   {
     "@type": "Thing",
     "name": "Nitrate"
   },
   {
     "@type": "Thing",
     "name": "groundwater level network"
   },
   {
     "@type": "Thing",
     "name": "Hydrologic Modeling"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Groundwater Quality"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "groundwater level declines"
   },
   {
     "@type": "Thing",
     "name": "Morongo"
   },
   {
     "@type": "Thing",
     "name": "Groundwater Supply"
   },
   {
     "@type": "Thing",
     "name": "Groundwater"
   },
   {
     "@type": "Thing",
     "name": "Groundwater Flow Model"
   },
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "Water Quality Indicators"
   },
   {
     "@type": "Thing",
     "name": "Measuring and Monitoring"
   },
   {
     "@type": "Thing",
     "name": "Water Quality Monitoring"
   },
   {
     "@type": "Thing",
     "name": "groundwater storage reductions"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "water quality degradation"
   },
   {
     "@type": "Thing",
     "name": "Groundwater Availability"
   },
   {
     "@type": "Thing",
     "name": "Yucca Valley"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "groundwater flow and transport"
   },
   {
     "@type": "Thing",
     "name": "Water Quality Benchmarks"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   }
 ]

}