Lehigh River — Walnutport to Bethlehem: River Level Today — Can You Paddle It?

At 943 cfs the Lehigh River is inside the runnable range but only 643 cfs above the 300 cfs floor, so it is sitting at the shallow end of what this reach runs at. A dry few days would take it under.

Over the last 24 hours it has gone from 1,040 cfs to 943 cfs, 9% down. Daily means over the past 7 days have run between 807 cfs and 1,520 cfs, 47% higher at the end of the week than the start. The last day and the week as a whole point opposite ways, which usually means a recent rain bump on top of a longer rising trend — worth a second look at the chart before you commit to the drive.

Lehigh River at Walnutport to Bethlehem is a 16-mile Class I run in Pennsylvania — easygoing moving water with light riffles and nothing technical. Most paddlers put in at Walnutport, PA access and take out at Sand Island, Bethlehem, PA, a trip that runs about 6 hours at a relaxed pace.

Whether it's worth the drive comes down to flow. This section generally paddles well at 300–6,000 cfs (a conservative estimate — see our methodology). Much below that and the Lehigh River gets low and bony, so you end up scraping gravel and walking the shallows; well above the top of the range it turns fast, cold and pushy, which is a more serious day than most casual boaters want. We read USGS gauge 01453000 about every 30 minutes and compare the live number to that window, so the verdict at the top of this page reflects conditions right now rather than a monthly average.

Flows here are usually most dependable April–October. Spring can run high after rain or snowmelt, and late summer often drops too low to float well — but the gauge always beats the calendar, so check today's reading before you go.