Description Usage Arguments Details Value References Examples

View source: R/induce_infiltration_rate.R

Calculate the pumping rate at which pumping will induce infiltration from stream.

1 | ```
induce_infiltration_rate(d, Qa)
``` |

`d` |
distance from well to stream [L] |

`Qa` |
ambient groundwater inflow rate per unit length of stream [L2/T] |

This calculates the critical pumping rate above which induced infiltration due to groundwater pumping will occur, based on the glover model of streamflow depletion. Derived in Wilson (1993) Eq. 5.

Assumptions:

Groundwater flow is perpendicular to stream

Horizontal flow >> vertical flow (Dupuit assumptions hold)

Homogeneous, isotropic aquifer

Constant

`Tr`

: Aquifer is confined, or if unconfined change in head is small relative to aquifer thicknessStream is straight, infinitely long, and remains in hydraulic connection to aquifer

Constant stream stage

No changes in recharge due to pumping

No streambank storage

Constant pumping rate

Aquifer extends to infinity

Stream fully penetrates through aquifer

No streambed resistance to flow (see hunt or hantush for streambed resistance)

A numeric of `Qc`

, critical pumping rate above which induced infiltration due to groundwater pumping will occur [L3/T].

Wilson, JL (1993). Induced Infiltration in Aquifers with Ambient Flow. Water Resources Research 29(10): 3503-12. doi:10.1029/93WR01393.

1 2 3 | ```
induce_infiltration_rate(d = 100, Qa = 10)
induce_infiltration_rate(d = 100, Qa = 50)
induce_infiltration_rate(d = 500, Qa = 50)
``` |

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