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A limnological comparison of two small Idaho reservoirs Item Info

Some limnological aspects of two small southeastern Idaho reservoirs were studied for one year. The reservoirs selected were Deep Creek Reservoir and Crowthers Reservoir, both located near Malad, Idaho. The study involved a comparison of the two reservoirs as to their chemical and physical features, standing crop of net zooplankton, and the primary production rates of nanoplankton using Carbon-14 isotope. A well defined thermocline did not form in either reservoir. Annual heat budgets of 15,233 and 15,544 cal/cm2 respectively were found for Deep Creek and Crowthers Reservoirs. Dissolved oxygen remained relatively high in both reservoirs except on the bottom where concentrations dropped to two ppm during the summer. Total alkalinity was relatively high in both reservoirs (140-170 ppm in Deep Creek Reservoir and 175-650 ppm in Crowthers Reservoir). Both reservoirs were alkaline with the pH ranging from 7.5 to 8.9. The mean primary production rates of nanoplankton using Carbon-14 were 9.9 mg C/m3/ hr for Crowthers Reservoir and 6.7 mg C/m3/hr for Deep Creek Reservoir. Standing crop of Cladocera for the year averaged 18.7 per liter in Deep Creek Reservoir compared to 11.7 per liter in Crowthers Reservoir. Copepoda standing crop averaged 70 per liter in Deep Creek Reservoir compared t o 36 per liter in Crowthers Reservoir. Rotifera averaged 34 per liter in Deep Creek Reservoir compared to 4 per liter in Crowthers Reservoir.

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Title:
A limnological comparison of two small Idaho reservoirs
Authors:
Miller, Gary Wayne
Date Created (ISO Standard):
1968-02
Description:
Some limnological aspects of two small southeastern Idaho reservoirs were studied for one year. The reservoirs selected were Deep Creek Reservoir and Crowthers Reservoir, both located near Malad, Idaho. The study involved a comparison of the two reservoirs as to their chemical and physical features, standing crop of net zooplankton, and the primary production rates of nanoplankton using Carbon-14 isotope. A well defined thermocline did not form in either reservoir. Annual heat budgets of 15,233 and 15,544 cal/cm2 respectively were found for Deep Creek and Crowthers Reservoirs. Dissolved oxygen remained relatively high in both reservoirs except on the bottom where concentrations dropped to two ppm during the summer. Total alkalinity was relatively high in both reservoirs (140-170 ppm in Deep Creek Reservoir and 175-650 ppm in Crowthers Reservoir). Both reservoirs were alkaline with the pH ranging from 7.5 to 8.9. The mean primary production rates of nanoplankton using Carbon-14 were 9.9 mg C/m3/ hr for Crowthers Reservoir and 6.7 mg C/m3/hr for Deep Creek Reservoir. Standing crop of Cladocera for the year averaged 18.7 per liter in Deep Creek Reservoir compared to 11.7 per liter in Crowthers Reservoir. Copepoda standing crop averaged 70 per liter in Deep Creek Reservoir compared t o 36 per liter in Crowthers Reservoir. Rotifera averaged 34 per liter in Deep Creek Reservoir compared to 4 per liter in Crowthers Reservoir.
Subjects:
limnology reservoirs Malad City
Latitude:
42.21
Longitude:
-112.26
Additional Lat-Long:
42.21, -112.17
IWRRI number:
196814
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
Jodi Haire
Date Digitized:
2008-09-25

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Source
Preferred Citation:
"A limnological comparison of two small Idaho reservoirs", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-196814.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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