Little Lehigh Creek near Trexlertown
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
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- Upstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
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Observed (OBS) 06/12/2025 7:15 PM EDTRecord: 6.7 ftCATEGORY STAGE 
Major Flooding 7 ft Moderate Flooding 5.7 ft Minor Flooding 4.5 ft Action 3 ft Reliability of the Forecast:
NOTE: Graphical forecasts are not available during times of high water, forecast crest information can be found in the local WFO web page.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 10 - Maximum recordable water level.
- 7 - Mertztown Rd in Lower Macungie floods. Rt 100 floods toward Macungie. Bridges across the Little Lehigh including Wild Cherry Ln, Macungie Rd, and Willow Rd are subject to closures. Leibert Creek backs up due to high water on the Little Lehigh at Indian Creek Rd in Lower Macungie and Upper Milford. Bridges over Leibert Creek are subject to closures. Businesses and Lower Macungie Township buildings flood on Brookside Rd. Swabia Creek backs up due to high water on the Little Lehigh resulting in flooding.
- 5.7 - Creamery Road in Lower Macungie begins to flood. Backyards along Mertztown Road flood all the way to Berks County. Wildlands Conservancy in Emmaus starts to flood. Leibert Creek backs up due to high water on the Little Lehigh and starts to flood Emmaus Community Park.
Gauge Info
| Coordinates | 40.5311, -75.6005 |
| RFC | MARFC |
| State | PA |
| WFO | PHI |
| County | Lehigh |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01451380 |
Gauge Location
Recent Crests
| 1. | 6.74 ft | on 01-10-2024 |
| 2. | 4.89 ft | on 12-28-2023 |
| 3. | 5.79 ft | on 12-18-2023 |
| 4. | 4.76 ft | on 04-08-2022 |
| 5. | 2.43 ft | on 09-10-2020 |
Recent Crests
| 1. | 6.74 ft | on 01-10-2024 |
| 2. | 4.89 ft | on 12-28-2023 |
| 3. | 5.79 ft | on 12-18-2023 |
| 4. | 4.76 ft | on 04-08-2022 |
| 5. | 2.43 ft | on 09-10-2020 |
Historic Crests
| 1. | 6.74 ft | on 01-10-2024 |
| 2. | 5.79 ft | on 12-18-2023 |
| 3. | 4.89 ft | on 12-28-2023 |
| 4. | 4.76 ft | on 04-08-2022 |
| 5. | 2.43 ft | on 09-10-2020 |
Historic Crests
| 1. | 6.74 ft | on 01-10-2024 |
| 2. | 5.79 ft | on 12-18-2023 |
| 3. | 4.89 ft | on 12-28-2023 |
| 4. | 4.76 ft | on 04-08-2022 |
| 5. | 2.43 ft | on 09-10-2020 |
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | 377.00 ft |
| moderate Flooding | 375.70 ft |
| minor Flooding | 374.50 ft |
| action | 373.00 ft |
| Latest Value | 372.08 ft |
| Gauge Zero | 370.00 ft |
Gauge Photos
No Images Found
Probability Information
No Images Available
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.