RHG_graph | R Documentation |

Computes hydraulic dimension (cross sectional area, width, or depth) from a built-in table of regional hydraulic curve graph coordinates.

```
RHG_graph(region, drainageArea, dimensionType)
```

`region` |
character; The region that a dimension will be calculated for. See the regional_curves$region field for a complete list. |

`drainageArea` |
numeric; The upstream drainage area of the location of the dimension (in square miles). |

`dimensionType` |
character; The dimension type: "area", "depth", "width" |

Used internally to convert historic studies that do not report regional relationships using the "power function" convention.

The value of the requested hydraulic dimension

Other data:
`RHG_graph_coefficients()`

,
`region_min_max()`

,
`regional_curves()`

,
`regional_curve`

```
# Calculate the cross sectional area for a watershed with drainage area = 1
# square mile in the Eastern United States region.
RHG_graph(region = "Eastern United States",
drainageArea = 1,
dimensionType = "area")
```

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