CLU Tiles

Vector tiles for USDA Common Land Unit (CLU) boundaries. CLUs represent individual agricultural field boundaries used by the Farm Service Agency for program administration.

Endpoint

GEThttps://api.landmapmagic.com/v1/tiles/clu/{z}/{x}/{y}.mvt

Returns a Mapbox Vector Tile containing CLU polygon geometries and label points. Zoom range: 12 – 17.

URL Parameters

Parameters

Name	Type	Description
z*	number	Zoom level (12-17).
x*	number	Tile X coordinate.
y*	number	Tile Y coordinate.
key*	string	Your API key.

Source Layers

cluCLU polygon boundaries with acreage and FIPS attributes.z12-17

clu_labelsCLU label points showing acreage at higher zoom levels.z13-17

Attributes

Available Attributes

Layer	Attribute	Type	Description
clu	id	number	Unique internal feature identifier.
clu	calcacres	number	Calculated acreage of the CLU polygon.
clu	state_fips	string	Two-digit FIPS state code (e.g. "19").
clu	county_fips	string	Three-digit FIPS county code (e.g. "169").
clu_labels	id	number	Unique internal feature identifier.
clu_labels	calcacres	number	Calculated acreage displayed as the label value.

Code Examples

curl

curl "https://api.landmapmagic.com/v1/tiles/clu/14/3640/6350.mvt?key=YOUR_API_KEY" \
  --output tile.mvt

JavaScript

const response = await fetch(
  "https://api.landmapmagic.com/v1/tiles/clu/14/3640/6350.mvt?key=YOUR_API_KEY"
);
const data = await response.arrayBuffer();
console.log("Tile size:", data.byteLength, "bytes");

Python

import requests

response = requests.get(
    "https://api.landmapmagic.com/v1/tiles/clu/14/3640/6350.mvt",
    params={"key": "YOUR_API_KEY"}
)
print(f"Status: {response.status_code}, Size: {len(response.content)} bytes")

Response

Response Headers

HTTP/1.1 200 OK
Content-Type: application/vnd.mapbox-vector-tile
Content-Encoding: gzip
Cache-Control: public, max-age=86400

The response body is a binary MVT protobuf. Empty tiles (areas with no CLU data, such as urban zones or non-agricultural land) return HTTP 204 with no body.

CLU data is sourced from the USDA Farm Service Agency. Common Land Units represent the smallest unit of land that has a permanent, contiguous boundary and common land cover or land management. CLU boundaries are available nationwide where FSA has digitized field boundaries. Coverage is most complete in agricultural areas of the Midwest, Great Plains, and Mississippi Delta.