Air Quality Alert
None

The Maryland Department of the Environment has issued a Code PURPLE Air Quality Alert Friday for the Maryland suburban DC region. A Code Purple Air Quality Alert means that air pollution concentrations within the region are very unhealthy for the general population. The risk of health effects is increased for everyone. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

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Air Quality Alert
Until 2026-07-18T00:00:00-04:00 • National Weather Service
The Maryland Department of the Environment has issued a Code PURPLE Air Quality Alert Friday for the Maryland suburban DC region. A Code Purple Air Quality Alert means that air pollution concentrations within the region are very unhealthy for the general population. The risk of health effects is increased for everyone. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx

PATUXENT RIV NEAR LAUREL, MD

Realtime Data • Report • Conditions

17

Discharge (cfs)

4.3

Gauge Height (ft)

USGS 01592500

Streamflow discharge was last observed at 17 cfs, and a gauge height of 4.28 feet. With the % decrease since yesterday, the streamflow average over the past 10 days is 19 .

Weather today, Tomorrow,

The Patuxent River is a major tributary to the Chesapeake Bay, and the flow is influenced by precipitation and land use. The river has several dams, including the Brighton Dam and the Duckett Dam, which can impact flow rates. The river experiences seasonal trends, with higher flows in the spring and fall due to increased precipitation. The Patuxent River is home to a diverse array of aquatic life, including fish, reptiles, and amphibians, and is a popular spot for recreational activities such as fishing and kayaking.

July 17, 2026

Elevation	160.0 ft
Last Updated
Gage height, ft	4.28 ft
Streamflow, ft³/s	17.3 ft3/s
Stream water level elevation above NAVD 1988, in ft	157.15 ft
Percent of Normal	58%
Year Over Year Average	30 cfs
24hr Flow Prediction	cfs
Maximum Recorded	8,120 cfs
Geolocation	39.12, -76.87

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Patuxent Riv Near Laurel, Md Realtime Data

PATUXENT RIV NEAR LAUREL, MD

Realtime Data • Report • Conditions

17

Discharge (cfs)

4.3

Gauge Height (ft)

July 17, 2026

Seasonal Comparison

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Patuxent Riv Near Laurel, Md Realtime Data

PATUXENT RIV NEAR LAUREL, MD

Realtime Data • Report • Conditions

17

Discharge (cfs)

4.3

Gauge Height (ft)

July 17, 2026

Seasonal Comparison

Oceanic Nino Index

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