Codorus Creek At Spring Grove flow report
As of July 14, 2026, Codorus Creek At Spring Grove is flowing at 21 cfs with a gage height of 0.88 ft, receding 13% over the past 24 hours. Source: USGS gauge #01574500, refreshed throughout the day.
Historical Data
Codorus Creek At Spring Grove at a glance
How Codorus Creek At Spring Grove is running right now, where it sits on the map, and the key gauge stats.
Codorus Creek At Spring Grove is flowing at 21 cfs, with the water sitting 0.88 ft at the gage. Flow is down 13% since yesterday as the gauge recedes.
This is USGS gauge #01574500 in Pennsylvania. Over the past 10 days the average has been 38 cfs, peaking at 109 cfs.
For real-time updates and historical context, see the realtime view or the historical comparison. Browse other gauges in the Pennsylvania flow report.
Streamflow Forecast
Over the next 5 days, Codorus Creek At Spring Grove is expected to recede from today's 21 cfs, toward roughly 19 cfs by 2026-07-18 (likely range 10-35 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.
Codorus Creek At Spring Grove
The constituents of the creek's flow include agricultural runoff, urban stormwater, and treated sewage. The creek has several dams, including the Lake Marburg Dam, which creates Lake Marburg. The flow of the creek varies seasonally, with higher flows occurring in the spring due to snowmelt and rainfall. Interesting hydrological facts about the creek include its history of flooding, which has caused significant damage in the past, and its importance as a source of drinking water for York County residents.
Nearby streamflow levels
Cross-check Codorus Creek At Spring Grove's discharge against nearby gauges to spot whether the change here is local or regional.
| Gauge | Streamflow |
|---|---|
| Codorus Creek At Spring Grove | 21 cfs |
| Codorus Creek Near York | 71 cfs |
| West Conewago Creek At East Berlin | 82 cfs |
| Codorus Creek At Pleasureville | 208 cfs |
| Gunpowder Falls At Hoffmanville | 7 cfs |
| West Conewago Creek Near Manchester | 291 cfs |
Nearby snowpack data
Snowpack at SNOTEL stations near Codorus Creek At Spring Grove. 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 |
|---|---|
| Dover 4.2 Wsw | 0 in |
| New Oxford 0.8 Se | 0 in |
| Hanover 3.5 Wsw | 0 in |
| Mount Wolf 1.0 Se | 0 in |
| York Haven 2.3 Wnw | 0 in |
| Norrisville 0.6 Wsw | 0 in |
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 Codorus Creek At Spring Grove in the Snoflo app
Save this gauge as a favorite, set push alerts when streamflow crosses a threshold (e.g. "alert me when Codorus Creek At Spring Grove crosses 5,000 cfs"), and Snoflo's iOS app will push the moment USGS reports the crossing.
About Codorus Creek At Spring Grove
Where does the streamflow data for Codorus Creek At Spring Grove come from?
Discharge, gage height, and water temperature come directly from the USGS streamflow gauge 01574500. 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 Codorus Creek At Spring Grove 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 Codorus Creek At Spring Grove report
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