Numana WetlandsNumana Wetlands.


Bioassessment sampling at Numana WetlandsBioassessment sampling at Numana Wetlands.


Numana Wetland tules and cattailsNumana Wetland tules and cattails.


Numana Wetlands during winterNumana Wetlands during winter.


Numana Wetlands outlet at the Truckee RiverNumana Wetlands outlet at the Truckee River.

Monitoring Map >> Numana Wetlands Outlet

Numana Wetlands Outlet - Non-point Source Water Quality Site

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Location: Latitude N: 39.47873
Longitude W: 119.31911
Elevation: 3986 ft.
Washoe County, NV; near Highway 447,   6 miles north of Wadsworth, NV.
Monthly water samples and in-situ stream measurements are taken when water is flowing. Annual bioassessments are also conducted on the wetland area.
Equipment: A YSI 6920 multiparameter water quality sonde is used to obtain temperature, specific conductance, pH, dissolved oxygen, salinity, tds, and turbidity.
Period of Record: 2000 to present.

Numana wetlands is a natural riverine wetland along the Truckee River. This wetland was enhanced in the mid 1990's, to 'treat' waste water coming from Numana Hatchery. This was done through a CWA 319 Nonpoint source grant, and a study by The Nature Conservancy (TNC). Another purpose was to attract Lahontan Cutthroat Trout, who may be imprinted to the hatchery's water, to spawn up the Truckee River. The PLPT monitors the water quality of the water coming out of the wetlands, before flowing into the Truckee River.

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