USGS Streamgage 12102190
Swan Creek at 80Th St East near Tacoma, WA
Swan Creek at 80Th St East near Tacoma, WA is USGS streamgage 12102190 in Washington, monitoring river discharge in hydrologic subbasin 17110014. It drains a watershed of about 2 square miles. Discharge records at this site go back to 1989. Typical flow runs near 0 cfs in July and 1.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 2 sq mi
- Gauge elevation
- 403 ft
- Subbasin (HUC-8)
- 17110014
- Coordinates
- 47.18452, -122.39371
- USGS site number
- 12102190
- Records begin
- 1989-10-01 (37 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 36 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 1.6 | 4.9 | 25.2 | |
| February | 1.1 | 3.3 | 16.1 | |
| March | 1.1 | 3.2 | 14.7 | |
| April | 0.4 | 1.7 | 8.5 | |
| May | — | 0.8 | — | |
| June | — | 0.6 | — | |
| July | — | 0 | — | |
| August | — | 0 | — | |
| September | — | 0 | — | |
| October | 0 | 0.2 | 3 | |
| November | 0.2 | 2.5 | 16.8 | |
| December | 0.9 | 4.3 | 22.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Swan Creek at 80Th St East near Tacoma, WA normally run highest?
- January, on the long-term record. The median daily flow that month is about 4.9 cfs, against 0 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Swan Creek at 80Th St East near Tacoma, WA?
- It depends on the month. In January, half of days historically fall near 4.9 cfs, with the middle 80% of days between 1.6 and 25.2 cfs. The month-by-month table on this page gives the full range.
- How long has Swan Creek at 80Th St East near Tacoma, WA been measured?
- Discharge records at USGS site 12102190 begin in 1989, about 37 years, covering roughly 5,260 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Swan Creek at 80Th St East near Tacoma, WA?
- The gauge sits at 47.18452, -122.39371, in Washington, in hydrologic subbasin 17110014, at an elevation of about 403 feet, draining roughly 2 square miles.
- Can I use Swan Creek at 80Th St East near Tacoma, WA data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.