Is my coordinate
on land or water?

A simple, fast API that lets developers easily answer the question of whether any latitude and longitude coordinate is on water or land.

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3D isometric view of coastline showing land and water

High-resolution data

OpenStreetMap

Simple API, Powerful Results

Send a latitude and longitude, get back instant JSON.

1,000 free credits on signup. Pay as you go from there. See pricing details.

Request

curl -G 'https://api.isitwater.com/v1/locations/water' \
  -d 'latitude=41.9029192' \
  -d 'longitude=-70.2652276' \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "request_id": "0e56c6d8-1cd3-499a-b21f-b676e5395239",
  "water": true,
  "features": [
    "ocean"
  ],
  "latitude": "41.9029192",
  "longitude": "-70.2652276"
}

Simple, Pay-As-You-Go Pricing

No subscriptions. Buy credits when you need them.

1,000 free credits on signup

Starting at $1

for 2,500 API calls

No monthly subscriptions
As low as $0.15 per 1,000 calls
Credits never expire
Optional auto-recharge

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