{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Jeffrey R Kennedy", "hasEmail": "mailto:jkennedy@usgs.gov"}, "description": "A three-dimensional unsaturated-zone flow model was developed using Hydrus-3D (PC-Progress, Inc.) to simulate managed aquifer recharge at the Southeast Houghton Artificial Recharge Project (SHARP) in Tucson, AZ. Recharge of up to about 4,000 acre-feet per year takes place at three surface basins. The model simulates variable-saturated flow in the unsaturated zone and groundwater mounding. The local-scale model (2 km x 2 km) does not simulate regional groundwater flow. The model was calibrated using groundwater-level data, repeat microgravity data, and PEST++ model calibration software. Additional information about the model and results is in the U.S. Geological Survey Scientific Investigations report 2024-XXXX (https://doi.org/10.3133/sir2024XXXX). Running the model requires a (paid) license for Hydrus-3D software.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P1VH7C73", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6585dbe7d34eff134d435d4a.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_6585dbe7d34eff134d435d4a", "keyword": ["Arizona", "Groundwater Model", "Hydrus-3D", "Pima County", "Southwest Gravity Program", "Tucson", "USGS:6585dbe7d34eff134d435d4a", "environment", "geophysics", "geoscientificInformation", "gravitational field (earth)", "groundwater", "inlandWaters", "unsaturated zone", "usgsgroundwatermodel"], "modified": "2025-09-04T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-110.79390, 32.13760, -110.77260, 32.15560", "theme": ["geospatial"], "title": "Hydrus-3D unsaturated-zone flow model for simulating recharge at the Southeast Houghton Artificial Recharge Project (SHARP), Tucson, Arizona, 2020-2022"}