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Agricultural Drains, Part 3

Agricultural Drains, Part 3. In-Class Task Script CE En 547 Brigham Young University. 1. Open project in GMS. 1. Select cells and mark as GHB. 2a. Save and run. Note changes in head. Pond acts as a sink. 2b. Flow Budget. Is the pond a source or a sink?

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Agricultural Drains, Part 3

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  1. Agricultural Drains, Part 3 In-Class Task Script CE En 547 Brigham Young University

  2. 1. Open project in GMS

  3. 1. Select cells and mark as GHB

  4. 2a. Save and run Note changes in head. Pond acts as a sink.

  5. 2b. Flow Budget Is the pond a source or a sink? How would spec head cells compare in this case?

  6. 3a. Change conductance Cell size = 50 ft x 50 ft C =KA/L = (0.01)(50*50)/1 C = 25

  7. 3b. Save and run Heads are higher. Why?

  8. 3c. Flow Budget Less discharge to pond. Why?

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