{
  "lake": {
    "id": "nv-mead",
    "name": "Lake Mead",
    "fullPoolElevationFt": 1229
  },
  "stale": false,
  "fetchedAt": "2026-11-08T06:52:54.481Z",
  "lakeId": "nv-mead",
  "level": {
    "elevationFt": 1039.46,
    "observedAt": "2026-11-06T07:00:00.000Z",
    "provisional": false,
    "source": "USBR RISE 6123"
  },
  "relativeToFullPoolFt": -189.5,
  "ramps": [
    {
      "kind": "ramp",
      "id": "hemenway-harbor",
      "name": "Hemenway Harbor Launch Ramp",
      "status": "usable",
      "depthOverRampFt": 9.5,
      "elevationSource": "derived",
      "confidence": "medium",
      "lat": 36.0469,
      "lng": -114.7936,
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/places/hemenway-harbor-launch-ramp.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA) / Las Vegas Boat Harbor concession",
        "state": "NV",
        "source": "NPS-published minimum safe elevation: 1,030 ft via pipe mat, 4 lanes available (Changing Lake Levels table, https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm). Main surviving motorized launch on Lake Mead. Live authority: same page; point-in-time."
      }
    },
    {
      "kind": "ramp",
      "id": "callville-bay",
      "name": "Callville Bay Launch Ramp",
      "status": "unusable",
      "depthOverRampFt": -25.5,
      "elevationSource": "derived",
      "confidence": "medium",
      "lat": 36.1392,
      "lng": -114.7236,
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/places/callville-bay-launch-ramp.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA) / Callville Bay Marina concession",
        "state": "NV",
        "source": "NPS-published minimum safe elevation: 1,065 ft, open via concession-managed Mobi Mat (Changing Lake Levels table, https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm). Live authority: same page; point-in-time."
      }
    },
    {
      "kind": "ramp",
      "id": "temple-bar",
      "name": "Temple Bar Launch Ramp",
      "status": "usable",
      "depthOverRampFt": 89.5,
      "elevationSource": "derived",
      "confidence": "medium",
      "lat": 36.0394,
      "lng": -114.3236,
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/places/temple-bar-launch-ramp.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA) / Temple Bar Marina concession",
        "state": "AZ",
        "source": "NPS-published minimum safe elevation: 950 ft, open via concession-managed Mobi Mat (Changing Lake Levels table, https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm). Lowest published floor on Lake Mead. Live authority: same page; point-in-time."
      }
    },
    {
      "kind": "ramp",
      "id": "echo-bay",
      "name": "Echo Bay Launch Ramp",
      "status": "usable",
      "depthOverRampFt": 4.5,
      "elevationSource": "derived",
      "confidence": "medium",
      "lat": 36.3103,
      "lng": -114.4189,
      "adminStatus": "Houseboat launching closed; ramp under construction in 2026 to extend the minimum safe elevation (NPS).",
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/places/echo-bay-launch-ramp.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA)",
        "state": "NV",
        "source": "NPS-published minimum safe elevation: 1,035 ft; open to motorized and non-motorized vessels, houseboats closed; under construction in 2026 to extend the minimum safe elevation (Changing Lake Levels table, https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm). Live authority: same page; point-in-time."
      }
    },
    {
      "kind": "ramp",
      "id": "south-cove",
      "name": "South Cove Launch Ramp",
      "status": "usable",
      "depthOverRampFt": 4.5,
      "elevationSource": "derived",
      "confidence": "medium",
      "lat": 36.1272,
      "lng": -114.0197,
      "adminStatus": "Concrete launch ramp CLOSED due to low water. A primitive gravel launch 0.25 mi south via a park-approved road is usable above 1,035 ft; 4WD recommended, soft sand/gravel.",
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/places/south-cove-launch-ramp.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA)",
        "state": "AZ",
        "source": "NPS-published minimum safe elevation: 1,035 ft via primitive ramp; the concrete launch ramp is closed due to low water (Changing Lake Levels table + https://www.nps.gov/places/south-cove-launch-ramp.htm, which states the primitive launch can be used at lake levels above 1,035 ft). Live authority: Changing Lake Levels page; point-in-time."
      }
    },
    {
      "kind": "ramp",
      "id": "boulder-harbor",
      "name": "Boulder Harbor Launch Ramp",
      "status": "unknown",
      "depthOverRampFt": null,
      "elevationSource": "unknown",
      "confidence": "none",
      "lat": 36.0442,
      "lng": -114.8125,
      "adminStatus": "CLOSED since 2021 — the harbor became too shallow and the ramp was closed (NPS). No current launch floor.",
      "coordConfidence": "entrance",
      "accessTier": "public",
      "website": "https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm",
      "phone": "(702) 293-8990",
      "amenities": {
        "operator": "NPS (Lake Mead NRA)",
        "state": "NV",
        "source": "Closed to houseboats, motorized and non-motorized vessels; the harbor became too shallow and the ramp closed in 2021 (Changing Lake Levels table, https://www.nps.gov/lake/planyourvisit/changing-lake-levels.htm). No launch floor published; left unknown. Live authority: same page; point-in-time."
      }
    }
  ],
  "bridges": [],
  "rampsSurveyed": false,
  "bestGuess": {
    "likelihood": "likely-marginal",
    "basis": "189.5 ft below full pool",
    "belowNormal": false,
    "relToNormalLowFt": 39.5
  }
}