2s

Real-time water data from USGS NWIS stream / river / groundwater gauges within a bounding box around lat/lon. Returns each site's latest reading per requested variable: streamflow (00060, ft³/s), gage height (00065, ft), water temperature (00010, °C), precipitation (00045, in), and others. Each reading: site code + name, lat/lon, variable name + description + unit, value (or null if no data / sentinel), qualifier codes (e.g., 'P' = provisional, 'A' = approved), observed timestamp. Free public-domain data from waterservices.usgs.gov.

Resource: 2s.io/api/gov/usgs-water

Network: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5

Payment methods: — · Last validation: 2026-09-14 11:57:43.082+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method",
      "queryParams"
    ],
    "properties": {
      "type": {
        "const": "http"
      },
      "method": {
        "const": "GET"
      },
      "queryParams": {
        "type": "object",
        "required": [
          "lat",
          "lon"
        ],
        "properties": {
          "lat": {
            "type": "number",
            "maximum": 90,
            "minimum": -90,
            "description": "Center latitude (decimal degrees)."
          },
          "lon": {
            "type": "number",
            "maximum": 180,
            "minimum": -180,
            "description": "Center longitude (decimal degrees)."
          },
          "limit": {
            "type": "integer",
            "default": 25,
            "maximum": 100,
            "minimum": 1,
            "description": "Max readings to return (1-100). Default 25."
          },
          "radius": {
            "type": "number",
            "default": 0.5,
            "maximum": 2,
            "minimum": 0.05,
            "description": "Half-side of bounding box, in decimal degrees. Default 0.5 (~35 mi)."
          },
          "variables": {
            "type": "string",
            "description": "Comma-separated USGS parameter codes (5-digit). Default \"00060,00065,00010\" (streamflow, gage height, water temp)."
          }
        },
        "additionalProperties": false
      }
    }
  },
  "output": null,
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
        "amount": "6000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "6000"
    },
    {
      "raw": {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "name": "USDC",
          "version": "1",
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
        "amount": "6000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 60
      },
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "amountAtomic": "6000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.