River Report
Report Bugs Weather Map River Rating: River Flow: 10 cfs
River Statistics:
»At Lyons
Current:   10 cfs
6 Hrs Ago:   11 cfs
12 Hrs Ago:   13 cfs
24 Hrs Ago:   11 cfs
Gage Height:   2.76 ft

Middle Saint Vrain at Peaceful Valley
Current:   -999 cfs
6 Hrs Ago:   -999 cfs
12 Hrs Ago:   -999 cfs
24 Hrs Ago:   -999 cfs
Gage Height:   -3.75 ft

The St. Vrain through town in Lyons and north up US 36 are both great options right now for some late winter fishing. As of early this week, the south fork up 7 is still pretty skinny to iced, especially the farther up you get in the canyon, but this freestone section should be coming back into play within the next few weeks to a month, weather depending. Top winter rigs in here tend to be a small palsa or other clear/unassuming indicator with two small nymphs underneath. It's hard to beat the baetis/midge combo right now, so try leading with something like a Micro May, Pheasant Tail, Barr's Emerger, BTS Nymphs, JuJu Baetis, etc., and drop to a #20-22 Zebra Midge, Top Secret Midge, Mercury Black Beauty, Bling Midge, WD-40, or Biot Midge. We're also getting toward the time of year when, with warming temps, the metabolism of these fish will be waking back up and they'll be starting to look for some relatively bigger offerings like San Juans, leeches, caddis larvae as we get closer to April, etc. If you see fish rising in the slicks in here in early - mid March, odds are the fish are coming up to midges: try double dry rigs like a trailing shuck midge or sprout midge in #24-26 trailing behind a griffith's gnat in #18-20.

Report Updated On: 03/05/2018
  Last updated 5:15 PM MST - Powered by USGS Water Services  
The Ultimate Fly Fishing Report
Casting a fly in a tranquil mountain stream, feeling the tug on the line, and holding a beautiful rainbow trout makes us feel alive and intensely connected with nature. Fly fishing is our way of life and we are blessed with hundreds of nearby rivers and streams just a short distance away from Boulder. From the swift spring waters of the Clear Creek to the meandering bends of the South Platte, it's critical to consider fishing conditions in advance and prepare accordingly. We rely on our experienced guides who venture into the wild to let us know which rivers favor fly fishing, where fish are biting, and which fly patterns are most effective. Planning a successful fishing trip also requires knowledge of stream flows at various river points and an accurate weather forecast for a given destination. At Rocky Mountain Anglers, we are dedicated to providing all avid anglers with detailed and timely information about hatches, water, and weather conditions. So before you head out the door on your next fishing adventure, visit our web site to find valuable information that will prepare you for a successful trip. Have fun chasing after your next trophy trout and enjoy nature's beauty!The Rocky Mountain Anglers Crew
If you have an update regarding a river's fishing conditions, feel free to email us at