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BASIN-USGS-COB Boulder Creek Millenium Baseline |
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Boulder Creek Watershed
Total Hardness Data for 2000 - Middle Boulder Creek above town of Eldora |
Preliminary Data - subject to revision
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Information on Total Hardness:
Hardness
generally refers to the amount of calcium and magnesium in water. In household use, these cations (ions with a charge greater than +1) can prevent soap from sudsing and leave behind a white scum in bathtubs. In the aquatic environment, calcium and magnesium help keep fish from absorbing metals, such as lead, arsenic, and cadmium, into their bloodstream through their gills. Therefore, the harder the water, the less easy it is for toxic metals to absorb onto gills. Water in the Boulder Creek watershed is generally soft because the water comes mainly from melting snow which is low in minerals and metals. |
More general information about Total Hardness
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Interpretation of Boulder Creek Total Hardness data
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Monitoring site information: |
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- Location: Middle Boulder Creek above town of Eldora
- Name: MBC-ELDORA
- Type: Composite
- Frequency: SemiAnnual
- Longitude: 105 ° W 35'
- Latitude: 39 ° N 57'
- Elevation: 8400 feet asl
- Site photo
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Upstream Site: Middle Boulder Creek @ Nederland WTP |
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Date |
Hard mg/L as CaCO3 |
June, 2000 |
4.0 |
October, 2000 |
180.0 |
*value below detection limit: |
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Detection Limit (if available) |
0.1 |
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Preliminary Data - subject to revision
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Select on the parameter name to view all Total Hardness time series plots on the basin map.
Select on the table date to view stream Total Hardness profiles observed on that date.
Select here to view all parameters at this site.
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