BASIN-USGS-COB Boulder Creek Millenium Baseline
Boulder Creek Watershed
Middle Boulder Creek - Boulder Creek
Longitudinal Ammonia Profiles for October, 2000
Preliminary Data - subject to revision
Marker Indicates no data available
Marker Indicates data exceeds plot scale.
Information on Ammonia:

Nitrogen occurs in water in various forms, including nitrate (NO3), nitrite (NO2), and ammonia (NH3). Nitrate enters waterways from lawn fertilizer run-off, leaking septic tanks, animal wastes, industrial waste waters, sanitary landfills and discharges from car exhausts. The burning of fossil fuels releases NOX compounds into the air that fall as acid rain (HNO3). Nitrates in water can cause severe illness in infants and domestic animals.

Ammonia is the decay product of animal proteins and is sometimes found in wastewater. Through the process of nitrification, ammonia in wastewater is oxidized to nitrite and then to nitrate by bacterial or chemical reactions.

More general information about Ammonia
Factors affecting Ammonia
Standards regarding Ammonia
Interpretation of Boulder Creek Ammonia data
Data Source:
Point of Contact:
Collection and Analysis notes
Indicated monitoring site:

The above map indicates water quality monitoring sites. To view data at a specific site select it from the map with the mouse.

Plot Label SiteName NH3
mg/L as N
MBC-ELDORA Middle Boulder Creek above town of Eldora < 0.10*
MBC-WTP Middle Boulder Creek @ Nederland WTP No Data
MBCaW Middle Boulder Creek at PSCo Weir No Data
BC-aNBC Middle Boulder Creek Above North Boulder Creek Confluence < 0.10*
BC-ORO Boulder Creek at Orodell 0.10
BC-CAN Boulder Creek at Eben G. Fine Park < 0.10*
BC-30 Boulder Creek at 30th St. < 0.10*
BC-61 Boulder Creek at 61st St. < 0.10*
BC-aWWTP Boulder Creek above WW Plant < 0.10*
BC-75 Boulder Creek at 75th St 7.80
BC-aDC Boulder Creek at Dry Creek 6.80
BC-95 Boulder Creek at 95th St 6.20
BC-107 Boulder Creek at 107th St 3.60
BC-aCC Boulder Creek Above Coal Creek 1.60
BC-bCC Boulder Creek Below Coal Creek 1.20
BC-aSV Boulder Creek above St. Vrain < 0.10*
*value below detection limit:
Detection Limit (if available) 0.1
Preliminary Data - subject to revision
Select on the parameter name to view more detailed information for that parameter in this month. Select on the site name to view data time series observed at that station. For monitoring site locations see site location map.

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