maps.waterdata.usgs.gov
Water Resources of the United States—National Water Information System (NWIS) Mapper
| Status | 200 OK — live & indexed by cl0q |
|---|---|
| First seen | 2025-08-20 |
| Last crawled | 2026-06-16 |
| IPv4 | 54.82.28.20 |
| Network | AS14618 Amazon.com, Inc. · Virginia |
| CNAME | nwismapper.wim.usgs.gov |