streamDepletr is an R package with functions for assessing the impacts of groundwater pumping on streams. There are two primary categories of functions:

- Analytical streamflow depletion models, which estimate the change in
groundwater inputs to a stream resulting from pumping (
`hunt`

,`glover`

,`hantush`

,`intermittent_pumping`

) - Depletion apportionment equations, which distribute streamflow
depletion estimating using the analytical models to different
reaches within a stream network (
`apportion_inverse`

,`apportion_web`

,`apportion_polygon`

,`apportion_wedge`

) - Data preparation functions to prepare inputs for the analytical
models and depletion apportionment equations
(
`depletion_max_distance`

,`prep_reach_dist`

,`streambed_conductance`

)

Combined, these functions will allow the user to estimate the impacts of an existing or proposed well (or group of wells) on individual stream reaches within a stream network.

You can install streamDepletr from CRAN:
`install.packages("streamDepletr")`

Alternately, you can use `devtools`

to install the development version:

```
devtools::install_github("FoundrySpatial/streamDepletr", build_vignettes=T)
```

Calculate and plot streamflow depletion as a fraction of the pumping
rate (`Qf`

) over the 100 days of pumping:

```
require(streamDepletr)
#> Loading required package: streamDepletr
# calculate depletion fraction
Qf <- glover(t = seq(1,100), # timesteps to evaluate
d = 150, # well to stream distance
S = 0.10, # specific yield
Tr = 50*1e-5*86400) # 50 m thick aquifer with hydraulic conductivity of 1e-5 m/s
# plot
plot(seq(1,100), Qf, type="l", xlab="Time [days]", ylab="Qf, Streamflow Depletion Fraction")
```

For more examples, please check out the package vignette:

`browseVignettes("streamDepletr")`

streamDepletr was developed by Foundry Spatial Ltd. and the University of Victoria with support from the National Sciences and Engineering Research Council of Canada.

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