Stony Brook At Rt 20 At Waltham, Ma Realtime Data
STONY BROOK AT RT 20 AT WALTHAM, MA
Realtime Data • Report • Conditions
20
Discharge (cfs)
5.2
Gauge Height (ft)
USGS 01104460
Streamflow discharge was last observed at 20 cfs, and a gauge height of 5.20 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 18 .
Weather today, Tomorrow,
The river's flow is affected by precipitation, snowmelt, and upstream dams, and is influenced by several tributaries, including Forest Grove Brook and Beaver Brook. Seasonally, the river experiences higher flows in the spring during snowmelt and in the fall during heavy rainfall. Interestingly, the Stony Brook Watershed Association has worked to improve the river's water quality and the habitat for fish and other wildlife, making it a valuable resource for the community.
August 10, 2026
| Elevation | 87.0 ft |
| Last Updated | |
| Gage height, ft | 5.2 ft |
| Streamflow, ft³/s | 20.4 ft3/s |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25°C | 981.0 uS/cm @25C |
| Chloride, water, filtered, estimated by regression equation, milligrams per liter | 270.0 mg/l |
| Temperature, water, °C | 24.8 deg C |
| Percent of Normal | 76% |
| Year Over Year Average | 27 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 390 cfs |
| Geolocation | 42.37, -71.27 |
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