Little Patuxent River At Guilford flow report
As of July 14, 2026, Little Patuxent River At Guilford is flowing at 5 cfs with a gage height of 1.62 ft, receding 21% over the past 24 hours. Source: USGS gauge #01593500, refreshed throughout the day.
Historical Data
Little Patuxent River At Guilford at a glance
How Little Patuxent River At Guilford is running right now, where it sits on the map, and the key gauge stats.
Little Patuxent River At Guilford is flowing at 5 cfs, with the water sitting 1.62 ft at the gage. Flow is down 21% since yesterday as the gauge recedes.
This is USGS gauge #01593500 in Maryland. Over the past 10 days the average has been 56 cfs, peaking at 251 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Maryland flow report.
Streamflow Forecast
Over the next 5 days, Little Patuxent River At Guilford is expected to hold near today's 5 cfs, toward roughly 6 cfs by 2026-07-19 (likely range 2-15 cfs) -- running well below the seasonal normal.
Powered by PULSE — Snoflo’s forecast engine, trained on this gauge’s full record of storms, snowmelt, and dry spells.
How does this compare to past years?
Year-over-year overlay, annual peak discharge, the full distribution of daily flows on record, and the gauge's rating curve.
Weather Forecast
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
Little Patuxent River At Guilford
The river is fed by smaller tributaries and is not dammed within this area. Seasonal trends show higher flows in the spring due to snowmelt and precipitation, with lower flows in the summer and fall. The river is home to a diverse range of aquatic species and has been the subject of conservation efforts. The hydrology of the Little Patuxent River is affected by various factors, including land use changes and extreme weather events.
Nearby streamflow levels
Cross-check Little Patuxent River At Guilford's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Little Patuxent River At Guilford | 5 cfs |
| Little Patuxent River At Savage | 27 cfs |
| Patuxent Riv Near Laurel | 17 cfs |
| Patuxent River Below Brighton Dam Near Brighton | 113 cfs |
| Hawlings River Near Sandy Spring | 11 cfs |
| East Branch Herbert Run At Arbutus | 1 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Little Patuxent River At Guilford. Spring snowmelt is the dominant driver of streamflow in mountain basins -- a deep snowpack upstream means more runoff later in the season.
| SNOTEL station | Snowpack |
|---|---|
| Ashton-Sandy Spring 1.8 Nnw | 0 in |
| Cylburn Coop | 0 in |
| Eldersburg 0.9 E | 0 in |
| Montgomery Village 1.1 Ene | 0 in |
| Dalecarlia Reservoir Coop | 0 in |
| Damascus 3 Ssw Coop | 0 in |
Plan a trip
Reservoirs, boat launches, river runs, and fishing spots within driving distance of Little Patuxent River At Guilford.
Boat launches
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River levels & flood safety
- Read the level before you go
- A river that's runnable at one flow can be deadly at another. Check current discharge and gage height — like the values shown above — against the flood-stage thresholds, and remember levels can spike fast after rain or a dam release.
- Respect cold water
- Snowmelt rivers run cold even in summer. Sudden immersion triggers cold-water shock and saps strength within minutes. Wear a PFD, dress for the water temperature (not the air), and never wade or paddle alone.
- Watch for swiftwater hazards
- Strainers (downed trees), undercut rocks, and low-head dams are the deadliest features on moving water. High, fast, muddy water hides them. If in doubt, scout from shore and portage.
- Mind flash floods & releases
- Narrow canyons can flood from a storm miles upstream, and dam-controlled reaches can rise without warning. Know the forecast, the release schedule, and your exit before you launch.
Track Little Patuxent River At Guilford in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Little Patuxent River At Guilford crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Little Patuxent River At Guilford
Where does the streamflow data for Little Patuxent River At Guilford come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01593500. Snoflo refreshes the time series throughout the day. Forecasts come from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the report updated?
USGS gauges report continuously (typically every 15 minutes). Snoflo pulls fresh values throughout the day — look for the "as of" timestamp on the streamflow hero card.
What's the difference between discharge and gage height?
Discharge (cubic feet per second, or cfs) is the volume of water flowing past the gauge each second. Gage height is how high the water sits at the gauge (feet). They're related by a rating curve specific to each gauge — higher water means more flow, but the exact ratio depends on channel shape.
How is "percent of median" calculated?
Today's discharge is compared to the historical median discharge on this calendar day across the gauge's full record. 100% = right on median; 200% = a very high year; 30% = a drought-level low.
What are flood stages, and is this river safe right now?
Flood stages are NWS-defined gage-height thresholds — Action, Minor, Moderate, Major — marking when nearby roads or floodplains start to be affected. "Safe" depends on your activity and skill: a level that's a fun paddle for an expert can be lethal for a wader. Always check the current level against the thresholds above and the safety links, and when in doubt, stay off the water.
Can I get alerts when Little Patuxent River At Guilford rises?
Yes — flow alerts are managed in the Snoflo iOS app. Favorite this gauge, set a streamflow threshold (e.g. "alert me when discharge crosses 5,000 cfs"), and you'll get a push the moment USGS reports the crossing.
Access the free Little Patuxent River At Guilford report
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