Observation window
July 31, 2026 · 9:00–9:36 AM ETWhen the 25 river reports were checked.
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Weekly river conditions
Archived editionJuly 31 river conditions, preserved as a snapshot.
This edition expired on August 7, 2026. It is a historical snapshot, not a statement of current river conditions.
Observation window: July 31, 2026 · 9:00–9:36 AM ETValidity ended: August 7, 2026 at 8:00 AM EDT
Archived takeaway
Caution was the most common call.
Thirteen of the 25 captured river snapshots were caution. Nine were good or great, one was poor, and two could not support a dependable call during the published window. No hard stop was recorded in this edition.
Read the timestamps
Three moments, three different meanings.
Score calculated
Calculated per river during the observation windowThis edition retained the collection window, not a separate public calculation timestamp for each river.
Editorial review
August 9, 2026BlueStreamFly Editorial Team checked the wording and links. The old river scores were not changed.
Status distribution
The July 31 snapshot at a glance.
These are old counts from 25 rivers. They do not describe current conditions across the country.
Great3
12% of the archived setGood6
24% of the archived setCaution13
52% of the archived setPoor1
4% of the archived setUnavailable2
8% of the archived setAll 25 rivers
Every value belongs to the expired edition.
The rows are ordered from the most restrictive archived call to the strongest. Follow the river link for a newly calculated score and official source checks.
| River | Archived call | Captured score | Live data check | Open current report |
|---|---|---|---|---|
| Oak Creek Fly Fishing Report | Archived callPoor that week | Captured score34/100 | Live data checkHigh | Open current reportCurrent report |
| South Platte Below Chatfield Fly Fishing Report | Archived callNo clear call | Captured score31/100 | Live data checkMedium | Open current reportCurrent report |
| Greenbrier River West Fork Fly Fishing Report | Archived callNo clear call | Captured score44/100 | Live data checkMedium | Open current reportCurrent report |
| Gallatin River Fly Fishing Report | Archived callUse caution | Captured score48/100 | Live data checkHigh | Open current reportCurrent report |
| East Branch Delaware River at Margaretville Fly Fishing Report | Archived callUse caution | Captured score54/100 | Live data checkHigh | Open current reportCurrent report |
| Upper Manistee River Fly Fishing Report | Archived callUse caution | Captured score54/100 | Live data checkHigh | Open current reportCurrent report |
| Battenkill River Fly Fishing Report | Archived callUse caution | Captured score54/100 | Live data checkHigh | Open current reportCurrent report |
| Nehalem River Fly Fishing Report | Archived callUse caution | Captured score58/100 | Live data checkHigh | Open current reportCurrent report |
| North Fork of the South Platte Fly Fishing Report | Archived callUse caution | Captured score61/100 | Live data checkMedium | Open current reportNorth Fork South Platte fishing report |
| Missouri River Fly Fishing Report | Archived callUse caution | Captured score62/100 | Live data checkHigh | Open current reportCurrent report |
| Boise River Fly Fishing Report | Archived callUse caution | Captured score63/100 | Live data checkHigh | Open current reportCurrent report |
| Payette River Fly Fishing Report | Archived callUse caution | Captured score64/100 | Live data checkHigh | Open current reportCurrent report |
| Llano River Fly Fishing Report | Archived callUse caution | Captured score64/100 | Live data checkHigh | Open current reportCurrent report |
| John Day River at Service Creek Fly Fishing Report | Archived callUse caution | Captured score65/100 | Live data checkHigh | Open current reportCurrent report |
| Lochsa River Fly Fishing Report | Archived callUse caution | Captured score69/100 | Live data checkHigh | Open current reportCurrent report |
| Little Colorado River Fly Fishing Report | Archived callUse caution | Captured score69/100 | Live data checkHigh | Open current reportCurrent report |
| San Gabriel River Fly Fishing Report | Archived callGood that week | Captured score74/100 | Live data checkHigh | Open current reportCurrent report |
| Mattole River at Petrolia Fly Fishing Report | Archived callGood that week | Captured score74/100 | Live data checkHigh | Open current reportCurrent report |
| Navarro River Fly Fishing Report | Archived callGood that week | Captured score79/100 | Live data checkHigh | Open current reportCurrent report |
| Toccoa River Fly Fishing Report | Archived callGood that week | Captured score82/100 | Live data checkHigh | Open current reportCurrent report |
| Medina River Fly Fishing Report | Archived callGood that week | Captured score82/100 | Live data checkHigh | Open current reportCurrent report |
| South Fork of the Snake River Fly Fishing Report | Archived callGood that week | Captured score82/100 | Live data checkHigh | Open current reportCurrent report |
| White River Fly Fishing Report | Archived callGreat that week | Captured score94/100 | Live data checkHigh | Open current reportCurrent report |
| San Marcos River Fly Fishing Report | Archived callGreat that week | Captured score96/100 | Live data checkHigh | Open current reportCurrent report |
| Portneuf River Fly Fishing Report | Archived callGreat that week | Captured score96/100 | Live data checkHigh | Open current reportCurrent report |
What needed extra verification then
Three archived watch items.
These flags explain the July 31 record. They do not say the same concern is active now.
Poor at the review snapshot
Oak Creek Fly Fishing Report
Do not treat the archived low score as a permanent call. Open the current river report and official gauge before leaving.
Call unavailable in the snapshot
South Platte Below Chatfield Fly Fishing Report
The archived edition could not make a dependable call. Open the current river report and official gauge before leaving.
Call unavailable in the snapshot
Greenbrier River West Fork Fly Fishing Report
The archived edition could not make a dependable call. Open the current river report and official gauges before leaving.
Method and review
A dated field brief, not a live dashboard.
This page saved one river score for each of 25 selected reports during the stated time. The counts include the saved status and live data check. They do not replace a current river page, gauge, weather alert, closure notice, or agency rule.
On August 9, we checked the archive label, dates, links, method, and correction link. We did not update the river readings or scores.
This archival webpage is not offered as a reusable dataset. Future CSV or JSON releases must pass BlueStreamFly's source-rights and export contract first.Planning a trip now?