Remote MCP server that gives an assistant real-time USGS stream gauge data: water levels, streamflow and flood status for US monitoring sites.
What you can do
Look up USGS monitoring sites in a US state by abbreviation and site type, with site numbers, names and locations
Retrieve recent time-series water level and streamflow data for a given site number, including discharge and gage height over a chosen number of days
Check current flood conditions in a state, listing sites where water levels are above flood stage
When to use it
Useful when you want an assistant to answer questions about river levels, streamflow or flooding in the United States, or to pull recent gauge readings for a specific USGS station without visiting the USGS site by hand.
Requirements
A remote streamable HTTP endpoint; no package installation, account, API key or environment variables are declared. Network access to the hosted endpoint is needed.
Before you install
Read-only data retrieval; no credentials or write actions are declared. Figures come from USGS gauges and should not be relied on as the sole source for safety or emergency decisions.
Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.olyport%2Fwater/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.
Get recent water level and streamflow data for a USGS monitoring site.
Returns time-series data including discharge (streamflow) and gage height
for the specified monitoring station.
Args:
site_number: USGS site number (e.g. '01646500' for Potomac River at Little Falls).
days: Number of days of data to retrieve (default 7, max 120).
Parametersdayssite_numberrequired
get_sites_by_state
Find USGS water monitoring sites in a state.
Returns a list of monitoring stations with their site numbers, names,
and locations. Use site numbers with get_water_levels to retrieve data.
Args:
state: Two-letter US state abbreviation (e.g. 'CA', 'TX').
site_type: Type of monitoring site. 'ST' for stream/river, 'GW' for groundwater well, 'SP' for spring.
limit: Maximum number of sites to return (default 50).
Parameterslimitstaterequiredsite_type
get_flood_status
Get current flood conditions for USGS monitoring sites in a state.
Returns sites where water levels are above flood stage, indicating
active flooding or near-flood conditions. Checks the most recent
instantaneous values against known flood stages.
Args:
state: Two-letter US state abbreviation (e.g. 'CA', 'TX', 'LA').
Parametersstaterequired
Version history
1
v1.1.0LatestSep 16, 2026
Score
83%
83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.