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Solunar feeding forecasts, major and minor fish activity windows, real-time USGS water temperature, and NOAA atmospheric pressure trends for Nelson Reservoir (Montana). Verified depth tactics, biological thermal baselines, and conservation guidelines for freshwater anglers.
Depth Guide: Surface water temperature directly regulates fish metabolic activity and foraging depth positioning.
Feeding Index: Low atmospheric pressure indicates incoming frontal activity. Fish often feed aggressively immediately ahead of approaching troughs.
Chop & Presentation: Light surface ripple breaks sunlight glare and disguises terminal tackle, prompting cautious game fish to strike moving lures.
Lunar Timing: Prime major window active around 11:25 AM MDT – 1:25 PM MDT. Astronomical alignment drives peak foraging intensity on Nelson Reservoir.
Current index calculated from verified local atmospheric, hydrographic & alert inputs.
Excellent for fishing (90/100), from 5 available inputs. Supporting this: Wind 2 mph from the east-southeast. Morning hours (08:00 local). Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Major feeding periods coincide with lunar transit (moon overhead and underfoot); minor periods occur during moonrise and moonset.
Moon Overhead (Transit)
Moon Underfoot (Antitransit)
| Feeding Window | Period Type | Astronomical Trigger | Feeding Intensity |
|---|---|---|---|
| 11:25 AM MDT – 1:25 PM MDT | Major Window | Moon Overhead (Transit) | High |
| 11:49 PM MDT – 1:49 AM MDT | Major Window | Moon Underfoot (Antitransit) | High |
| 5:50 AM MDT – 6:50 AM MDT | Minor Window | Moonrise | Moderate |
| 5:47 PM MDT – 6:47 PM MDT | Minor Window | Moonset | Moderate |
Solunar Science: Major periods produce peak gravitational tidal pull on aquatic organisms. Times and moon phase are computed locally from Nelson Reservoir's coordinates and current astronomical orbit.
| Day / Date | Moon Phase | Best Feeding Window | Forecast Wind | Rain Chance |
|---|---|---|---|---|
| Today Oct 9, 2026 | Waning Crescent (3%) | 11:25 AM MDT – 1:25 PM MDT | 13 mph | 0% |
| Tomorrow Oct 10, 2026 | New Moon (1%) | 12:12 PM MDT – 2:12 PM MDT | 15 mph | 9% |
| Sunday Oct 11, 2026 | New Moon (0%) | 1:00 PM MDT – 3:00 PM MDT | 13 mph | 89% |
| Monday Oct 12, 2026 | Waxing Crescent (2%) | 1:47 PM MDT – 3:47 PM MDT | 6 mph | 57% |
| Tuesday Oct 13, 2026 | Waxing Crescent (6%) | 2:35 PM MDT – 4:35 PM MDT | 7 mph | 7% |
| Wednesday Oct 14, 2026 | Waxing Crescent (12%) | 3:23 PM MDT – 5:23 PM MDT | 8 mph | 15% |
| Thursday Oct 15, 2026 | Waxing Crescent (19%) | 4:11 PM MDT – 6:11 PM MDT | 23 mph | 24% |
Provenance: Moon phase and major feeding windows are calculated using NOAA solar-lunar algorithms for Nelson Reservoir's geographic coordinates. Wind velocity and precipitation probability reflect official National Weather Service forecast periods.
Specific game fish population surveys and tactical depth maps for Nelson Reservoir are currently being synchronized from state wildlife and fisheries records. Consult the state licensing guidelines below for active creel limits, open seasons, and regulated bait restrictions.
Public boat ramps, shore fishing access, and county park landings for Nelson Reservoir are managed under state and regional public land guidelines.
Anglers launching trailered motorized watercraft or paddlecraft should verify seasonal water clearance and county park parking requirements prior to launching.