Fishability Summary (0–100)
PRIME 75–100 Get on the water
GOOD 60–74 Worth the trip
FAIR 45–59 Workable — pick your window
MARGINAL 30–44 Tough bite likely
TOUGH < 30 Maybe tie clousers instead
Wind Speed (7–8 wt rod, larger flies)
0–8 mph Negligible · easy bug-pushing
8–12 mph Minor · still comfortable with poppers
12–18 mph Moderate · heavier rods, weighted flies
18–22 mph Significant · big-river casts suffer
22+ mph Adverse / unsafe on big water · stand down
Pressure Trend (3-hr Δ, inHg)
RAPID FALL ≤ −0.10 · feeding now, fish before the storm
FALLING −0.10 to −0.03 · pre-front feeding frenzy 🎯
STABLE −0.03 to +0.03 · reliable baseline activity
RISING +0.03 to +0.10 · steady feeding, good bite
RAPID RISE ≥ +0.10 · post-front spike, bite often stalls
Water Temperature (warm water species)
Smallmouth band shown · pike prefer cooler 50–68°F windows
< 50°F Pre-season · pike active, smallmouth lethargic
55–65°F Pre-spawn smallmouth · pike peak
65–75°F Smallmouth prime feeding window
75–82°F Fishable · best early/late, topwater can be hot
> 82°F Smallmouth stressed · ethical C&R only
Flow brackets — per river
Each watershed has its own scale · thresholds calibrated per gauge (score Δ in parens)
Very low Concentrated fish, tough wading (−5)
Low-normal Good clarity & wading (+3)
Prime Ideal float & wade window (+5)
Elevated Streamers & banks · stained (−5)
High / blown Off-color, dangerous wading (−18)
Warm Water Note
Peak season runs May through September. Smallmouth go on the
feed once water hits ~58°F, with topwater popper bites most
consistent at 68–78°F. Northern pike are most active in cooler
shoulder windows (April/May and October). Big rivers like the
Mississippi and St. Croix recover from rain more slowly than the
Crow or Snake — but can also be unsafe to wade once flow climbs.
Always check the trend before driving.