City of Longmont/USGS Water Quality Monitoring
	Saint Vrain Watershed City of Longmont Water Quality Monitoring Sites

Water quality data is collected monthly by the City of Longmont at 6 location s along the Saint Vrain River.

View data as a profile along the Saint Vrain River system
View data as annual time series at a particular location
View data as graphs of water quality parameters on a map

To see graphs of water quality in the Saint Vrain River from upstream to downstream, use this form. Select the month, year, and parameter(s) of interest, and indicate if you also want to see a data table.

Time Series

To see graphs of water quality over time at a certain location, use this form. Select the year, sampling station, and parameter(s) of interest, and indicate if you also want to see a data table.

Select year 1998 1999 2000	Include Data Table
Select Station for Time Series St. Vrain River at Airport Road St. Vrain River above WWTP Effluent St. Vrain River at County Line Road St. Vrain River at Boulder Creek Lefthand Creek at St. Vrain River Boulder Creek at St. Vrain River
Water Temperature pH (Acidity) Specific Conductance Alkalinity Hardness Turbidity Total Dissolved Solids Total Organic Carbon Dissolved Oxygen Nitrate and Nitrite Ammonia Total Phosphate Stream Flow All Parameters
Indicated monitoring site:

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Map Displayed Time Series

To see graphs of water quality over time at all locations, use this form. Select the year and parameter of interest.

Select year 1998 1999

and Select Parameter for Map Plot Water Temperature Dissolved Oxygen Specific Conductance pH (Acidity) Total Organic Carbon Total Alkalinity Total Hardness Nitrate + Nitrite Ammonia Total Phosphate Total Dissolved Solids Turbidity

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