Conditions · Fox River · Modeled

Geneva Pool Fishing Outlook Details

Safety, trip conditions, season availability, productivity, direction, and evidence quality for Geneva Pool.

Modeled

River conditions are modeled for Geneva Pool

Geneva Pool does not have a direct continuous mainstem gauge. River conditions are modeled from surrounding Fox River gauges, tributary runoff, and historical relationships. The transfer is validated at Montgomery; Geneva-specific discharge error is not independently established.

Updated Sep 10, 2026 12:10 AM CDT
Next 3 Hours NO-GO
Next 24 Hours GO Stable
Safety: No Go Trip Conditions: Good Season: Open Productivity: Mixed Direction: Stable Confidence: Medium

A current safety restriction makes this a no-go.

The current NWS hourly forecast period is non-daylight, so the short-horizon operational result is NO GO. No material operational river limitation is currently identified.

Best Weather / On-Water Window Thu 6:00 AM – 6:00 PM

This is the longest continuous daylight period in the next 24 hours without a material operational weather limitation.

Trip Decision

Safety

No Go
The current NWS hourly forecast period is non-daylight, so the short-horizon operational result is NO GO. No material operational river limitation is currently identified.

Trip Decision

Trip Conditions

Good
A favorable daylight fishing-weather window is available and no material operational limitation is identified.

Dive Otter Season

Season

Open
Water temperature and the forecast daytime high are within Dive Otter's preferred operating season.

Fishing Conditions

Productivity

Mixed
No strongly favorable or strongly unfavorable environmental pattern dominates.

Trend

Direction

Stable
Direction reflects the modeled Geneva Pool river trajectory and forecast runoff context.

Evidence Quality

Confidence

Medium
Confidence reflects the quality and representativeness of the evidence behind the recommendation.

Modeled Flow · Geneva Dam

Typical · Stable The modeled seasonal flow band and recent modeled trend provide river context. No Geneva Pool absolute-flow operating threshold is currently used.
Typical · Stable

Fishing Evidence

What Is Shaping the Outlook

Each section repeats one of the six decisions above, then shows the evidence used to reach it. Supporting Context preserves additional observations that do not currently change a decision.

Decision Evidence

Safety

No Go

The current NWS hourly forecast period is non-daylight, so the short-horizon operational result is NO GO. No material operational river limitation is currently identified.

Current Safety Assessment
No Go
Safety
The current NWS hourly forecast period is non-daylight, so the short-horizon operational result is NO GO. No material operational river limitation is currently identified.

Decision Evidence

Trip Conditions

Good

A favorable daylight fishing-weather window is available and no material operational limitation is identified.

Best Weather / On-Water Window
Thu 6:00 AM – 6:00 PM
Favorable
This is the longest continuous daylight period in the next 24 hours without a material operational weather limitation.

Decision Evidence

Season

Open

Water temperature and the forecast daytime high are within Dive Otter's preferred operating season.

Observed Upstream Water Temperature
76.6 °F
Favorable
McHenry is an observed upstream proxy. Dive Otter's 55 °F boundary is a trip preference, not a biological or universal safety threshold.

Decision Evidence

Productivity

Mixed

No strongly favorable or strongly unfavorable environmental pattern dominates.

Modeled Flow · Geneva Dam
767 cfs · Typical
Neutral
Provisional modeled discharge compared with the modeled Geneva Pool seasonal baseline.
Modeled River Trend
Stable
Neutral
Recent modeled Geneva Dam discharge trajectory.
Corridor Runoff Context
Typical Or Low
Neutral
Ferson and Mill inform corridor runoff state; they are not treated as literal Geneva inflow measurements.
Observed Upstream Water Temperature
76.6 °F
Neutral
McHenry observed upstream proxy; not a direct Geneva Pool measurement.
Observed Upstream Dissolved Oxygen
6.4 mg/L
Neutral
McHenry observed upstream proxy; not a direct Geneva Pool measurement.
Observed Upstream Turbidity
Typical
Neutral
McHenry observed upstream proxy; not a direct Geneva Pool measurement.

Decision Evidence

Direction

Stable

Direction reflects the modeled Geneva Pool river trajectory and forecast runoff context.

Modeled River Trend
Stable
Neutral
Recent modeled Geneva Dam discharge trajectory.

Decision Evidence

Confidence

Medium

Confidence reflects the quality and representativeness of the evidence behind the recommendation.

Mainstem River Evidence
Modeled
Neutral
Geneva Pool has no direct continuous mainstem discharge gauge. Modeled provenance limits confidence to Medium without making conditions unsafe.
Evidence Quality
Context
Neutral
Conditions confidence is authoritative and caps Fishing confidence.
Evidence Quality
Context
Neutral
Modeled-reach Fishing confidence cannot exceed MEDIUM.
Evidence Quality
Context
Neutral
Biological proxy freshness was evaluated independently.

About the Fishing Outlook

How the Recommendation Is Built

The fishing outlook does not use a single numerical score. It evaluates safety, practical trip conditions, Dive Otter season availability, productivity, direction, and evidence quality as separate decisions.

Safety alone can produce a No-Go. Poor comfort, a limited season, an unfavorable productivity outlook, or the lack of a fully favorable weather window can make the overall outlook Marginal without labeling the trip unsafe.

Direction describes whether conditions appear to be improving, stable, deteriorating, or uncertain. Confidence describes the completeness and freshness of the evidence; it does not predict whether fish will bite.

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