South Fork Tolt River near Index water level
River gauge, South Fork Tolt River, Washington, United States
Right now
Low for mid-October
Water level
- Flow
- 6.1 cfs
- Water temperature
- 45 °F
History
20252026
What this means
At 0.74 ft, the South Fork Tolt River near Index is below normal for mid-October.
The median for mid-October is 1.26 ft, based on 39 years of readings, so the river stage is 0.52 ft below typical. On the same day last year the reading was 2.29 ft, a difference of −1.55 ft.
The level is falling, down 0.06 ft over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 0.52 ft and 1.46 ft.
Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that. The water temperature at the gauge is 45 °F.
Compared with 39 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 1.26 ft0.52 ft below the median for this date
- Normal for this date
- 0.71 ft – 2.14 ft8 years in 10 fall in this range (39 years of records)
- Same day last year
- 2.29 ft−1.55 ft
- Lowest and highest in 30 days
- 0.52 ft – 1.46 ft
- Lowest and highest in 12 months
- 0.48 ft – 3.87 ft
What the stage means on the water
Low water means more dragging on shallow riffles and slower floats. Fish crowd into the deeper runs, and warm, low water stresses them, so play and release them quickly.
Weather at the gauge
Rain in the last 3 days: 0.32 in. Rain that falls upstream can take hours or days to show up at a river gauge.
Forecast: Open-Meteo
Map
Other gauges on the South Fork Tolt River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| South Fork Tolt River near CarnationRiver gauge, South Fork Tolt River | 1.87 ft | Very low | −0.01 ft | 5.4 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Phelps Creek below Unnamed Tributary near IndexRiver gauge, Phelps Creek | 5.83 ft | Low | −0.06 ft | 0.2 mi |
| Nf Tolt River above Yellow Creek near CarnationRiver gauge, Nf Tolt River | 44.6 cfs | Low | −14.7 cfs | 7 mi |
| Nf Snoqualmie River near Snoqualmie FallsRiver gauge, Nf Snoqualmie River | 2.19 ft | Low | −0.13 ft | 8 mi |
| Sf Tolt River below Regulating Basin near CarnationRiver gauge, Sf Tolt River | 3.13 ft | Very low | ±0 | 9 mi |
| Skykomish River near Gold BarRiver gauge, Skykomish River | 4.40 ft | Normal | −0.05 ft | 10 mi |
| Tolt River near CarnationRiver gauge, Tolt River | 4.45 ft | Low | −0.09 ft | 10 mi |
| South Fork Skykomish River at SkykomishRiver gauge, South Fork Skykomish River | 17.08 ft | Below flood stage | −0.03 ft | 11 mi |
| Snoqualmie River near CarnationRiver gauge, Snoqualmie River | 44.60 ft | Very low | −0.04 ft | 15 mi |
Questions and answers
Is the South Fork Tolt River near Index higher than last year?
No, it is 1.55 ft lower than on the same day last year, when the reading was 2.29 ft.
What is a normal level for the South Fork Tolt River near Index in mid-October?
The median for mid-October is 1.26 ft. In 8 years out of 10 the reading falls between 0.71 ft and 2.14 ft, based on 39 years of records.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of South Fork Tolt River near Index today?
On Oct 19, 2026, 09:30 AM PDT, the water level was 0.74 ft. Down 0.06 ft over the last 24 hours.
Is South Fork Tolt River near Index rising or falling?
Down 0.06 ft over the last 24 hours. Down 0.14 ft over the last 7 days.
Is the level of South Fork Tolt River near Index normal?
Low for mid-October. Compared with 39 years of daily readings for this time of year.
How often is this data updated?
The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:12147600(Agency page)- Coordinates
47.70677, -121.60011(WGS84)- Vertical datum
- NAVD88
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 0.74 ft | 2026-10-19 16:30 | Provisional |
| Flow | 6.1 cfs | 2026-10-19 16:30 | Provisional |
| Water temperature | 45 °F | 2026-10-19 16:30 | Provisional |
Download
Embed this gauge
Add a live card for this gauge to your website. It updates on its own and links back here.
How to cite
U.S. Geological Survey: South Fork Tolt River near Index (usgs:12147600). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/south-fork-tolt-river-near-index
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer