USACE Time Series Values: Lake Level, River Stage, Flow (CWMS)

usacecwms/timeseries

Returns the values of one Army Corps of Engineers time series (reservoir pool elevation, tailwater, river stage, flow, release, precipitation and others) for a window: the last 24 hours by default, or between `begin` and `end`. Each value is [epoch milliseconds UTC, value, quality code]; the reply names the units (English by default) and gives a `next-page` cursor when the window holds more values than one page. Find the series `name` with the `timeseries-catalog` tool. U.S. Army Corps of Engineers data, passed through unmodified and served by Eden Engine; not an official USACE product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

U.S. Army Corps of Engineers

Data from the U.S. Army Corps of Engineers (USACE) Corps Water Management System (CWMS) Data API, a U.S. federal agency work. No credit is required; credit to the U.S. Army Corps of Engineers is given as a courtesy. Served by Eden Engine; not an official USACE product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "usacecwms/timeseries" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "usacecwms/timeseries" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "usacecwms/timeseries", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "usacecwms/timeseries", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 21, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "name",
    "office"
  ],
  "properties": {
    "end": {
      "type": "string",
      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}Z$",
      "description": "End of the window, ISO 8601 in UTC. Defaults to now."
    },
    "name": {
      "type": "string",
      "pattern": "^[A-Za-z0-9 _.~-]{1,120}$",
      "description": "Full time series name with six dot-separated parts, for example Abington.Flow.Inst.15Minutes.0.USGS-rev. Case is ignored. Find names with the timeseries-catalog tool."
    },
    "unit": {
      "enum": [
        "EN",
        "SI"
      ],
      "type": "string",
      "default": "EN",
      "description": "EN for English units (feet, cfs), SI for metric. Default EN."
    },
    "begin": {
      "type": "string",
      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}Z$",
      "description": "Start of the window, ISO 8601 in UTC, for example 2026-10-20T00:00:00Z. Defaults to 24 hours before `end`."
    },
    "cursor": {
      "type": "string",
      "pattern": "^[A-Za-z0-9+/=_-]{1,400}$",
      "description": "Opaque continuation value: pass the `next-page` string from the previous response to get the following page. Leave out for the first page."
    },
    "office": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{2,6}$",
      "description": "USACE office code, for example LRL (Louisville District), SWT (Tulsa District) or MVP (St. Paul District). The `offices` tool lists them."
    },
    "page_size": {
      "type": "integer",
      "default": 200,
      "maximum": 1000,
      "minimum": 1,
      "description": "Values per page, 1 to 1000. Default 200."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "name",
    "values"
  ],
  "properties": {
    "end": {
      "type": "string"
    },
    "name": {
      "type": "string"
    },
    "page": {
      "type": "string"
    },
    "begin": {
      "type": "string"
    },
    "total": {
      "type": "integer",
      "description": "Values in the whole window."
    },
    "units": {
      "type": "string",
      "description": "Unit of every value, for example ft or cfs."
    },
    "values": {
      "type": "array",
      "items": {
        "type": "array",
        "items": {
          "type": [
            "number",
            "null"
          ]
        }
      },
      "description": "Rows of [epoch milliseconds UTC, value, quality code]; value is null for a missing reading."
    },
    "interval": {
      "type": "string",
      "description": "ISO 8601 duration between values for a regular series."
    },
    "next-page": {
      "type": "string",
      "description": "Present when more values follow: pass it back as `cursor`."
    },
    "office-id": {
      "type": "string"
    },
    "page-size": {
      "type": "integer"
    },
    "time-zone": {
      "type": "string"
    },
    "value-columns": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true
      },
      "description": "Column names of each `values` row: date-time, value, quality-code."
    }
  },
  "additionalProperties": true
}