Skip to main content

USGS Gauges

USGS Gauges

I'm surprised how many people still call our fly shop to get information about our local streams' water levels.  Most of these people have never heard of the online USGS  (United State Geological Survey) gauges that are available to everyone for free.   There isn't a gauge for every stream, but there is one for most of the well known fly fishing destinations.  The gauges show a stream's height in feet and its flow (discharge) in cfs (cubic feet per second).  You can also find a stream's long term median flow and compare it to its discharge to see if the water is high, low, or right about average.  Water temperatures are listed for a few streams but not for most of them.  At the top of the page, you will see a drop-down box called "Geographic Area."  You can use this box to check the flows of various streams and rivers for any state in the country.  This site is an amazingly important resource, and I check it every day.  You should too.  Here's the link:

It's currently on the Pennsylvania page because that's where I keep it set in my favorites (after all, I do live in PA).  But again, just toggle through it to find the water you plan to fish this week.  It just may save the day for your next trip.  Good luck!

GET THE NEWSLETTER Join the List and Never Miss a Thing.

Recommended Articles

Recent Videos

Fly Fisherman Magazine Covers Print and Tablet Versions

GET THE MAGAZINE Subscribe & Save

Digital Now Included!


Give a Gift   |   Subscriber Services


Buy Digital Single Issues

Magazine App Logo

Don't miss an issue.
Buy single digital issue for your phone or tablet.

Buy Single Digital Issue on the Fly Fisherman App

Other Magazines

See All Other Magazines

Special Interest Magazines

See All Special Interest Magazines

GET THE NEWSLETTER Join the List and Never Miss a Thing.

Get the top Fly Fisherman stories delivered right to your inbox.

Phone Icon

Get Digital Access.

All Fly Fisherman subscribers now have digital access to their magazine content. This means you have the option to read your magazine on most popular phones and tablets.

To get started, click the link below to visit and learn how to access your digital magazine.

Get Digital Access

Not a Subscriber?
Subscribe Now

Enjoying What You're Reading?

Get a Full Year
of Guns & Ammo
& Digital Access.

Offer only for new subscribers.

Subscribe Now