East Poplar River at International Boundary
River flow & level · USGS gauge 06178500 · Delaware · drains 541 sq mi
Latest reading Oct 26, 10:30 AM · streamflow
The East Poplar River at International Boundary is running 2.56 cfs, 98% of the median flow for October 26 (2.60 cfs, 50 years). Gage height is 5.29 ft, 4.7 ft below flood stage (10.0 ft). Flow is up 7% from 24 hours ago.
Streamflow
cubic feet per secondReadingNormal range for the date (25th–75th pct.)Median for the date
Gage height & flood stages
ft above gauge datumAction (8.0 ft) is 2.7 ft above the latest reading, off this chartMinor (10.0 ft) is 4.7 ft above the latest reading, off this chart
Reading
East Poplar River at International Boundary fishing report & conditions
updated Oct 26, 12:50 PM ETWater 38°F, flow 98% of normal, flow steady — fair fall fishing day (5/10), best window 8:04 AM–9:04 AM (moonset near sunrise).
- Water temp38°Fmeasured Oct 26, 10:30 AM · this gauge
- Flow98% of normalFlow steady (+7% in 24 h)
Official Delaware fishing info: Delaware DNREC Division of Fish and Wildlife — Fishing info
Best fishing times today
Today is a fair fishing day (solunar + local conditions)
5/10
Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 7:39 AM · Sunset 5:50 PM
Major fishing times
- Moon underfoot12:12 PM–2:12 PM
Minor fishing times
- Moonset8:04 AM–9:04 AMSunrise
- Moonrise5:09 PM–6:09 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 5/10Fair | Major 12:12 PM–2:12 PM Minor 8:04 AM–9:04 AM · 5:09 PM–6:09 PM |
|---|---|---|
| TueOct 27 | 4/10Fair | Major 12:41 AM–2:41 AM · 1:11 PM–3:11 PM Minor 9:31 AM–10:31 AM · 5:42 PM–6:42 PM |
| WedOct 28 | 3/10Poor | Major 1:42 AM–3:42 AM · 2:14 PM–4:14 PM Minor 10:55 AM–11:55 AM · 6:29 PM–7:29 PM |
| ThuOct 29 | 4/10Fair | Major 2:46 AM–4:46 AM · 3:18 PM–5:18 PM Minor 12:07 PM–1:07 PM · 7:31 PM–8:31 PM |
| FriOct 30 | 3/10Poor | Major 3:50 AM–5:50 AM · 4:22 PM–6:22 PM Minor 1:02 PM–2:02 PM · 8:47 PM–9:47 PM |
| SatOct 31 | 4/10Fair | Major 4:52 AM–6:52 AM · 5:22 PM–7:22 PM Minor 1:42 PM–2:42 PM · 10:10 PM–11:10 PM |
| SunNov 1 | 4/10Fair | Major 4:50 AM–6:50 AM · 5:16 PM–7:16 PM Minor 1:11 PM–2:11 PM · 10:33 PM–11:33 PM |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the river is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1) | 2 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · flow within ±15% in 24 h +1, rising over 25% −1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 0 |
| Today | 5, rounded | 5/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page; water temperature measured at this gauge. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 49.00, -105.41 (moon times from astronomical equations, East Poplar River at International Boundary local time).
Flood stages
NOAA NWS gauge EPRM8- Action stage8 ft+2.7 ft from now
- Minor stage10 ft+4.7 ft from now
- Record crest12.8 ft1943
October 26 in history
50 years of flow records- Today2.56 cfs
- Same date last year2.58 cfs2025
- Median2.60 cfs
- Normal range2.40 cfs – 2.90 cfs25th–75th percentile
- Highest since 19779.81 cfs2020
- Lowest since 19771.40 cfs1993
Last 10 days
| Date | Mean flow (cfs) | Change |
|---|---|---|
| Mon Oct 26 (today) | 2.63 | +7% |
| Sun Oct 25 | 2.45 | -13% |
| Sat Oct 24 | 2.83 | -16% |
| Fri Oct 23 | 3.36 | +15% |
| Thu Oct 22 | 2.91 | -4% |
| Wed Oct 21 | 3.02 | -4% |
| Tue Oct 20 | 3.15 | +33% |
| Mon Oct 19 | 2.37 | -14% |
| Sun Oct 18 | 2.76 | +2% |
| Sat Oct 17 | 2.71 | +92% |
Daily mean of all readings that day; today is the average so far.
About this data
- Gauge
- USGS 06178500 — East Poplar River at international boundary
- Location
- 49.0000, -105.4096 · Delaware
- Drainage area
- 541 sq mi
- Measures
- Streamflow (discharge), cubic feet per second
- Daily statistics
- 1977–2025 (approved daily values)
- Latest reading
- Oct 26, 10:30 AM local time (provisional)
- Page built
- Oct 26, 2026 12:50 PM ET
- Flood stages
- NWS gauge EPRM8 — National Water Prediction Service
Source: U.S. Geological Survey Water Data for the Nation (USGS monitoring location page). Readings every 15–60 minutes; the newest values are provisional. Percentiles compare today’s reading with every past year’s daily mean for the same calendar date. Weather: NOAA National Weather Service.