Difference between revisions of "WATER QUALITY"

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*[https://www.ncbi.nlm.nih.gov/pubmed/24836138 Stets. 2014. Long-term trends in alkalinity in large rivers of the conterminous US in relation to acidification, agriculture, and hydrologic modification. Sci Total Environ. 2014 Aug 1;488-489:280-9]
 
*[https://www.ncbi.nlm.nih.gov/pubmed/24836138 Stets. 2014. Long-term trends in alkalinity in large rivers of the conterminous US in relation to acidification, agriculture, and hydrologic modification. Sci Total Environ. 2014 Aug 1;488-489:280-9]
 
'''P Biogeochemistry'''
 
'''P Biogeochemistry'''
*[https://www.ncbi.nlm.nih.gov/pubmed/21520765 Wildman et al. 2011.0Physical, Chemical, and Mineralogical Characteristics of a Reservoir Sediment Delta (Lake Powell, USA) and Implications for Water Quality during Low Water Level. J Environ Qual. 2011 Mar-Apr;40(2):575-86.]
+
*[https://www.ncbi.nlm.nih.gov/pubmed/21520765 Wildman et al. 2011. Physical, Chemical, and Mineralogical Characteristics of a Reservoir Sediment Delta (Lake Powell, USA) and Implications for Water Quality during Low Water Level. J Environ Qual. 2011 Mar-Apr;40(2):575-86.]
 
*[https://link.springer.com/article/10.1007/BF00024907 Bostrom et al. 1988. Exchange of phosphorus across the sediment-water interface. Hydrobiologia 170: 229-244]
 
*[https://link.springer.com/article/10.1007/BF00024907 Bostrom et al. 1988. Exchange of phosphorus across the sediment-water interface. Hydrobiologia 170: 229-244]
 
*[[Media:Hering and Wildman Final Report to Bureau of Rec.pdf| Hering and Wildman. A study of the dynamics of phosphorus associated with suspended and deposited sediments in the Colorado River delta, Lake Powell, Utah. ]]
 
*[[Media:Hering and Wildman Final Report to Bureau of Rec.pdf| Hering and Wildman. A study of the dynamics of phosphorus associated with suspended and deposited sediments in the Colorado River delta, Lake Powell, Utah. ]]

Revision as of 11:32, 31 October 2017


ForebayWaterQuality.jpg

Desired Future Condition for Water Quality

Water quality with regards to dissolved oxygen, nutrient concentrations and cycling, turbidity, temperature, etc., is sufficient to support natural ecosystem functions, visitor safety and visitor experience to the extent feasible and consistent with the life history requirements of focal aquatic species.
• Ecosystem-sustaining nutrient distribution, flux, and cycling.
• Hydro-physical conditions and characteristics of the CRE necessary to sustain aquatic biota.
• Acceptable water quality for human health and visitor experience.

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Updates

2017 Water Quality PEP

Reading List

Adaptive Management

Calcite Coprecipitation

CE-QUAL Modeling

Contaminants

General Lake Powell Limnology

Long-term Water Quality Trends

P Biogeochemistry

USGS Data Series, Circulars, and other Reports

Water Quality and Glen Canyon Dam Management

Water Quality and Metabolism in the Colorado River below Glen Canyon Dam


Water Quality Gages

Papers and presentations

2017

2016

2015

2014

2012

2010

2006

2005

Modifying releases at Glen Canyon Dam to improve water quality in the Lees Ferry reach

Rough operation of the turbines

Increases the oxygenation of water going through the power plant Is damaging to the turbines

Oxygenation of the tailwater using the bypass tubes

The Basin States have maintained that according to Sec 602a of the Colorado River Basin Project Act (1968), the bypass tubes at Glen Canyon Dam can only be used to avoid anticipated spills from Lake Powell. The Basin States have agreed to bypass at Glen Canyon Dam for HFEs on the condition that it be done as part of an experiment and not a management action or operational decision. Costs associated with any release that bypasses the powerplant for reasons other than to avoid a spill or for experimentation relating to HFEs would have to be borne by the GCDAMP (see DOI determination for costs of the 2004 BHBF).

Adding power generation to the bypass tubes

Allows for drawing water from deeper in Lake Powell: colder and water may be more oxygenated

Other methods:

  • Forebay diffusers
  • Side Stream Super-Saturation
  • Aeration
  • Turbine Venting
  • Surface Water Pumps (impellers)

(Mobley Engineering: Hydropower Enhancement Technologies)

Other Stuff