Rivermatics

USGS Streamgage 09485700

Rillito Creek at Dodge Boulevard, at Tucson, AZ

Rillito Creek at Dodge Boulevard, at Tucson, AZ is USGS streamgage 09485700 in Arizona, monitoring river discharge in hydrologic subbasin 15050302. It sits on the Rillito Creek, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 871 square miles. Discharge records at this site go back to 1987. Typical flow runs near 0 cfs in July and 0 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Arizona
Drainage area
871 sq mi
Gauge elevation
2,370 ft
Subbasin (HUC-8)
15050302
Coordinates
32.27149, -110.91457
USGS site number
09485700
Records begin
1987-07-24 (39 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Rillito Creek at Dodge Boulevard, at Tucson, AZ. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
0.1 0.5 31.4
0 0.2 8.3
0 0.1 0.4
0 0 0.2
0 0 0.1
0 0 0.1
0 0 0.1
0 0 0.2
0 0 0.1
0 0 0.1
0 0 0.1
0 0 0.1
0 0 0.1
0 0 0.1

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

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.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 0 0 55.3
February 0 0 88
March 0 0 94.3
April 0 0 26.2
May 0 0 0
June 0 0 0.1
July 0 0 45.3
August 0 0 54.7
September 0 0 11.7
October 0 0 0.3
November 0 0 0.5
December 0 0 4.1

All values in cubic feet per second (cfs).

Common questions

When does Rillito Creek at Dodge Boulevard, at Tucson, AZ normally run highest?
January, on the long-term record. The median daily flow that month is about 0 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Rillito Creek at Dodge Boulevard, at Tucson, AZ?
It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 55.3 cfs. The month-by-month table on this page gives the full range.
How long has Rillito Creek at Dodge Boulevard, at Tucson, AZ been measured?
Discharge records at USGS site 09485700 begin in 1987, about 39 years, covering roughly 9,129 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Rillito Creek at Dodge Boulevard, at Tucson, AZ?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Rillito Creek at Dodge Boulevard, at Tucson, AZ?
The gauge sits at 32.27149, -110.91457, in Arizona, in hydrologic subbasin 15050302, at an elevation of about 2,370 feet, draining roughly 871 square miles.
Can I use Rillito Creek at Dodge Boulevard, at Tucson, AZ 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.

Upstream and downstream on the Rillito Creek

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Rillito Creek in full.

Other gauges in this subbasin