Annual ground-water use in the Twin Cities metropolitan area, Minnesota, 1970-79

Horn, Marcus A.

doi:10.3133/ofr84577

Cited by 1 publication

(6 citation statements)

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“…For example, compared to a recharge rate of 3.5 in/yr (or about 600 Mgal/d of water), ground-water use in 1980 amounted to about 200 Mgal/d. Horn (1983) described available water-use data for 1880 to 1980. Data from 1880 to 1970 were compiled as 10 or 20-year averaged values.…”

Section: Dischargementioning

confidence: 99%

“…The model constructed for this study resulted from a three-phase approach that included (1) preliminary modeling by Guswa and others (1983), (2) a period of additional data collection on water use and water levels (Horn, 1983;Schoenberg, 1984), and (3) construction of the current model. The preliminary model identified increased needs for accurate water levels and water-level-change data, water-use data, and a detailed physical description of the hydrologic system.…”

Section: Effects Of Present Ground-water Withdrawalsmentioning

confidence: 99%

“…The results of further analysis of water-level and water-use data were briefly described in previous sections. See Horn (1983) and Schoenberg (1984) for additional detail.…”

Section: Effects Of Present Ground-water Withdrawalsmentioning

confidence: 99%

“…During the period 1976-79, ground water supplied 62 percent of all water used, excluding instrearn use by electrical powerplants. Of all the water used, ground water supplied 29 percent for municipal use, 27 percent for self-supplied industrial and commercial use, and 6 percent for irrigation and golf-course watering (Horn, 1983). The remaining water used (38 percent) came from the Mississippi River, which serves as the primary municipal water supply for Minneapolis, St. Paul, and the cities they supply.…”

mentioning

confidence: 99%

“…In the first phase, Guswa and others (1982) developed a preliminary ground-water-flow model. Horn (1983Horn ( , 1984 and Schoenberg (1984) collected and reported additional water-use and potentiometric data, respectively, in the second phase.…”

mentioning

confidence: 99%

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Effects of present and projected ground-water withdrawals on the Twin Cities aquifer system, Minnesota

Schoenberg¹

1990

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The Twin Cities aquifer system in Minnesota contains 5 aquifers and 4 confining units composed of 14 stratigraphic units. Bedrock aquifers consist of friable sandstones and highly fractured carbonate rocks; aquifers in the glacial drift consist of outwash and alluvium. From 1880 to 1980, groundwater withdrawals had caused long-term declines of water levels of as much as 90 feet in the Prairie du Chien-Jordan aquifer and 240 feet in the deeper Mount Simon-Hinckley aquifer-the two major sources of groundwater supplies in the area. A steady-state model of groundwater flow was used successfully to simulate the potentiometric surfaces of the aquifers during the 1970's. assuming a withdrawal rate of about 190 million gallons per day from the entire system. Projected changes in population and industrial development suggest that future groundwater withdrawals may increase from those for the 1970's. Steady-state model results indicate that the potentiometric surface of the Mount Simon-Hinckley aquifer would be lowered as much as 400 feet if pumpage from that aquifer were increased by 125 percent above 1980 groundwater withdrawal rates of about 200 million gallons per day. The potentiometric surface of the Prairie du Chien-Jordan aquifer also would be lowered as much as 400 feet if pumpage from that aquifer were increased by 200 percent above 1980 groundwater withdrawals of 160 million gallons per day. Given the projected distribution of future groundwater development, and the limitations inherent in simulating groundwater flow, the model results indicate that an approximate limit of groundwater availability in the Twin Cities Metropolitan Area, Minnesota, is from about 500 to 800 million gallons per day.

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Section: Dischargementioning

confidence: 99%

Section: Effects Of Present Ground-water Withdrawalsmentioning

confidence: 99%

“…The results of further analysis of water-level and water-use data were briefly described in previous sections. See Horn (1983) and Schoenberg (1984) for additional detail.…”

Section: Effects Of Present Ground-water Withdrawalsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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