Operations OverviewLive drainage monitoring and active site status
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HEC-RAS Prediction
NOAA / NWS OFFICIAL ALERT POLYGONS
NOAA Alert
Normal
High
Alarm
Communications Lost
NOAA/NWS official warning polygon
Poseidon predictive polygon
HISTORICAL Live
24 hours agoNow

All Monitoring Sites

Active Alarms

Hermes MQTT Communications

Midland, Texas

NOAA Current Forecast

—
Waiting for NOAA data…
Rain Chance—
Wind—
Next 6 Hours—inches
Next 12 Hours—inches
Next 24 Hours—inches
Next 72 Hours—inches
NOAA/NWS quantitative precipitation forecast for the selected forecast grid.

Next 6 Hours

Active NWS Alerts Near Selected Location

Hourly Forecast Rainfall — Next 24 Hours

NOAA/NWS quantitative precipitation forecast, inches per hour
Wettest Hour —
Peak Hourly Rain —
24-Hour Total —

Hourly Detail

Storm Timeline

Restricted workspace · Owner/programmer access

Import HEC-RAS Depth GeoTIFF

Upload a georeferenced HEC-RAS depth raster. Poseidon converts it to a transparent WGS84 overlay, serves it to Google Maps, and samples predicted depth at each monitoring station.

Install GDAL on the server, then upload the georeferenced depth GeoTIFF.

Prediction Layer

ScenarioNot loaded
Design Rainfall—
Maximum Depth—
Raster Updated—
Predicted High—
Predicted Alarm—
Overlay Opacity 62%
0.01–0.5 ft
0.5–1.0 ft
1.0–2.0 ft
2.0–3.0 ft
3.0+ ft

Location Alerts

Place a monitoring point, enter engineer-approved water-surface elevations, and notify only the contacts assigned to that location.

Select a saved location or choose Set Monitoring Point.

Configured Locations

0

Location Subscribers

0

Select and save a location before assigning subscribers.

Recent Location Evaluations

0
Restricted workspace · Owner/programmer access

Add Monitoring Station

Example for Midland: -102.184128
Used whenever station simulation is unchecked and loaded as the HEC-RAS starting value.
Hermes MQTT Discovery
Hermes stations are automatically discovered from poseidon/+/status. Their GPS coordinates and live points are supplied by the edge station. Use this form only for manual or simulated sites.
Simulate this manually-created station

Configured Stations

Restricted workspace · Owner/programmer access

Export Poseidon Configuration

Download a complete backup of station locations, thresholds, MQTT identities, and current application configuration.

Restore Configuration

Select a Poseidon backup JSON file. Restore replaces the current station configuration with the contents of the backup.

Restore and delete operations require administrator authentication. Download a backup before replacing or deleting station data.
Restricted workspace · Owner/programmer access

Application Settings

Copy Station Settings

Copy operating thresholds and simulation preference to another existing station. The destination station keeps its own name, ID, location, latitude, and longitude.

Copy Modbus Register Mapping

Choose a destination station. Connection and register settings will be copied from the selected source station.

Poseidon Administration

Owner and programmer sign-in is required for HEC-RAS, administration, backups, and settings.