{
  "updated_at": "2026-09-25",
  "project": "Harvey source basins to a proposed Texas High Plains/Ogallala recharge site",
  "calculation_status": "blocked",
  "recoverable_acre_feet": null,
  "units": "acre-feet",
  "rule": "Only compute a site-specific, time-stepped recovery estimate after all required inputs are measured or approved for the same intake, route, recharge site and period. Never substitute gross rainfall, total gauge flow or regional aquifer storage for divertible supply.",
  "datasets": [
    {
      "id": "precipitation",
      "name": "Observed Harvey rainfall and watershed areas",
      "status": "loaded",
      "scope": "Five HUC8 basins and 139 HUC12 subwatersheds; seven 24-hour NOAA Stage IV grids ending August 26–September 1, 2017",
      "file": "/data/harvey-stageiv-ledger.json",
      "source": "https://water.noaa.gov/about/precipitation-data-access",
      "use": "Gross precipitation context; not divertible runoff"
    },
    {
      "id": "flow",
      "name": "Observed river flow",
      "status": "loaded",
      "scope": "Five USGS gauges, 17-day August 25–September 10, 2017 window; one has a missing day",
      "file": "/data/harvey-usgs-flow-checkpoints.json",
      "source": "https://waterservices.usgs.gov/nwis/dv/",
      "use": "Total daily gauge throughput; requires event baseline, routing and intake-specific analysis"
    },
    {
      "id": "aquifer_extent",
      "name": "High Plains aquifer extent",
      "status": "loaded",
      "scope": "199 official USGS DS543 polygons, reprojected to EPSG:4326; 2009 publication, 2010 dataset filename",
      "file": "/data/high-plains-aquifer-boundary.geojson",
      "source": "https://water.usgs.gov/GIS/dsdl/ds543.zip",
      "sha256": "e5b94e11453aa375ec655b47e666cd06306a8a7af41c808aa8b60d4c653a03d9",
      "use": "Regional extent only; does not show suitable injection or infiltration sites"
    },
    {
      "id": "groundwater_model",
      "name": "Texas High Plains hydrogeology and groundwater availability",
      "status": "source_identified",
      "scope": "TWDB High Plains Aquifer System GAM v1.02, 2025 extension; aquifer data packaged for entire model area",
      "source": "https://www.twdb.texas.gov/groundwater/models/gam/hpas/hpas.asp",
      "use": "Requires model package ingestion and extraction for a selected site; regional model is not a recharge permit"
    },
    {
      "id": "groundwater_levels",
      "name": "Well levels and change in groundwater storage",
      "status": "source_identified",
      "source": "https://ne.water.usgs.gov/ogw/hpwlms/data.html",
      "use": "Select current monitored wells near a proposed site and document measurement dates"
    },
    {
      "id": "surface_rights",
      "name": "Existing surface-water rights and legal availability",
      "status": "site_specific_required",
      "source": "https://www.tceq.texas.gov/gis/water-rights-viewer",
      "use": "TCEQ water-right authorizations and basin Water Availability Model at the exact proposed diversion"
    },
    {
      "id": "environmental_flow",
      "name": "Environmental flows and downstream obligations",
      "status": "site_specific_required",
      "source": "https://www.tceq.texas.gov/permitting/water_rights/wr_technical-resources/wam.html",
      "use": "Approved protected-flow schedule by diversion point and date"
    },
    {
      "id": "water_quality",
      "name": "Event-water and receiving-aquifer quality",
      "status": "site_specific_required",
      "source": "https://www.usgs.gov/tools/water-quality-portal",
      "use": "Sample stormwater and local groundwater; treatment and compatibility review"
    },
    {
      "id": "intake_capacity",
      "name": "Intake, diversion and temporary-storage capacity",
      "status": "engineering_required",
      "source": null,
      "use": "Surveyed location, flood-stage operating limits, pump curve and hourly capacity"
    },
    {
      "id": "route_and_energy",
      "name": "Conveyance route, elevation, energy and losses",
      "status": "engineering_required",
      "source": "https://www.usgs.gov/3d-elevation-program/about-3dep-products-services",
      "use": "Select alignment, elevation profile, right-of-way, pipe/canal design, pump energy and transit losses"
    },
    {
      "id": "recharge_capacity",
      "name": "Actual receiving-site recharge rate and storage response",
      "status": "field_test_required",
      "source": "https://www.twdb.texas.gov/groundwater/models/gam/hpas/hpas.asp",
      "use": "Geology, infiltration or injection testing, mounding and groundwater-flow modeling at the actual site"
    },
    {
      "id": "permits_and_cost",
      "name": "Permits, land access, capital and operating costs",
      "status": "approval_required",
      "source": "https://www.tceq.texas.gov/permitting/water_rights",
      "use": "Written authorizations, local district rules, landowner rights and priced design"
    }
  ]
}