March madness is here. Recent snow has bumped up our snowpack levels to almost 100%, and more precipitation is on the way. Great news for our valley and fisheries!
Flows on the Big Lost River below Mackay Dam are holding stable at about 90 CFS, allowing for easy wading and concentrating fish in winter holding areas. Nymph fishing is incredibly productive, and midges and some baetis will appear during the afternoons. When nymphing, concentrate your efforts on pockets, runs, and current seams. Effective flies include Rainbow Warriors, Copper Johns, Zebra Midges and San Juan Worms. Hint – a bit of orange or red on your nymphs is a very good idea. Surface-feeding fish are often found in slow, skinny water; a stealthy approach is necessary. Baetis activity will ramp up toward the end of the month, extending through April. This can be some of the finest angling of the year on the lower Lost. Trail Creek Road is closed for the winter, but fishing the lower Lost in March is well worth the longer drive. Keep in mind that as the month progresses, there will be significant spawning activity on the river; be aware of fish on redds and let them do their thing.
Fishing on the Big Wood River remains decent. Anglers are having success nymphing, fishing midge dries, and throwing sculpin patterns for the river’s biggest fish. Look for the best midge activity to occur during the afternoons. Griffiths Gnats, Trailing Shuck Midges, Sprout Midges and Zebra Midges should all be in your Big Wood winter fly box.
The South Fork of the Boise continues to fish fairly well with stable flows. Flies used on the Big Lost and Big Wood are equally as effective on the South Fork. Be prepared for any weather if you make the drive.
All of Silver Creek below the Highway 20 bridge remains open through the end of the month, as does Kilpatrick Pond. Expect very good fishing with streamers and leeches this month, and excellent midge and baetis activity for the latter half of March.
Happy fishing, everyone!