Free & Open

Water Data API

Access 1000+ water datasets, conferences, papers, and hydrology terms via simple JSON endpoints. No authentication required.

Base URL

https://waterdatagroup.com/api/v1

Endpoints

Datasets

Complete directory of 1000+ water and environmental data sources worldwide.

GEThttps://waterdatagroup.com/api/v1/datasets.json

Response fields:

namedescriptionurlcategorydataTypes[]accessLevelregioncountrycoveragelastUpdatedpopular

Conferences

Water and environmental conferences, workshops, summits, and webinars.

GEThttps://waterdatagroup.com/api/v1/conferences.json

Response fields:

idnameorganizerstartDateendDatelocationcountrytypecategoryurldescriptionfreevirtual

Papers

Curated collection of water data descriptor and research papers.

GEThttps://waterdatagroup.com/api/v1/papers.json

Response fields:

idtitleauthorsjournalyeardoiurlcategorydescriptiontags[]

Wiki

Hydrology and water science terminology with definitions.

GEThttps://waterdatagroup.com/api/v1/wiki.json

Response fields:

termslugshortDefinitionfullDefinitioncategorytags[]relatedTerms[]

Stats

Summary statistics: counts, categories, regions, and access levels.

GEThttps://waterdatagroup.com/api/v1/stats.json

Response fields:

datasets.totaldatasets.categories[]datasets.regions[]conferences.totalpapers.totalwiki.total

Usage Examples

Fetch all datasets (JavaScript)

const res = await fetch('https://waterdatagroup.com/api/v1/datasets.json')
const { data } = await res.json()

// Filter free datasets
const free = data.filter(d => d.accessLevel === 'Free')
console.log(`${free.length} free datasets`)

Fetch datasets (Python)

import requests

resp = requests.get("https://waterdatagroup.com/api/v1/datasets.json")
datasets = resp.json()["data"]

# Filter by region
us = [d for d in datasets if d["region"] == "United States"]
print(f"{len(us)} US datasets")

Fetch datasets (curl)

curl -s https://waterdatagroup.com/api/v1/datasets.json | jq '.data | length'

Notes

All endpoints return JSON with a meta object and a data array.
No authentication or API key required.
Data is updated on each site deployment. Check meta.updated for the last update date.
CORS is enabled — you can call these endpoints from any domain.
Job listings are not included in the static API as they are updated dynamically.
Please credit Water Data Group if you use this data in published research or applications.