City of Boulder/USGS Water Quality Monitoring
Boulder Creek Watershed
COB Water Quality Monitoring Sites

Water quality data is collected monthly by the City of Boulder at 18 locations along Boulder Creek.

View data as a profile along the North Boulder Creek/Boulder Creek system
View data as annual time series at a particular location
View data as graphs of water quality parameters on a watershed map
View the monthly NSF Water Quality Index for stations on a watershed map


Boulder Creek/North Boulder Creek Water Quality Profiles

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

Water Temperature Stream Flow pH (Acidity)
Specific Conductance Alkalinity Hardness
Turbidity Total Dissolved Solids Total Suspended Solids
Nitrate and Nitrite Nitrite Ammonia
Total Phosphate Ortho-phosphate Fecal Coliform Bacteria
Dissolved Oxygen Total Organic Carbon DO % of saturation
All Parameters
Include Data Table

Boulder Creek Watershed Water Quality Time Series

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

Water Temperature Stream Flow pH (Acidity)
Specific Conductance Alkalinity Hardness
Turbidity Total Dissolved Solids Total Suspended Solids
Nitrate and Nitrite Nitrite Ammonia
Total Phosorphus Ortho-phosphate Fecal Coliform Bacteria
Dissolved Oxygen Total Organic Carbon DO % of saturation
All Parameters
Select year Include Data Table
Indicated monitoring site:

Map Displayed Time Series

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

Select year ... and parameter to plot

Water Quality Index Map

To see a map of the NSF Water Quality Index for Boulder Creek use this form. Select the year and month of interest.

Select Month... Select year ...


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Last Page Update - Sunday April 12, 2009