n_maynord1991

<code>n_maynord1991</code> calculate Manning's n using the Maynord (1991) method of
estimating grain roughness

Estimates frictional constants for hydraulic analysis
of rivers. This HYDRaulic ROughness CALculator (HYDROCAL) was previously
developed as a spreadsheet tool and accompanying documentation by McKay and
Fischenich (2011, <https://erdc-library.erdc.dren.mil/jspui/bitstream/11681/2034/1/CHETN-VII-11.pdf>).

Colton Shaw

HYDROCAL

Hydraulic Roughness Calculator

S. Kyle McKay

n_maynord1991 function

<dl><dt>grain</dt>
<dd>grain size (d90) in millimeters. The original model was calibrated
for 4.57 mm &lt; d90 &lt; 134 mm.</dd>
<dt>restrict</dt>
<dd>allows for function parameters to restrict certain values. Type bool. Default TRUE.</dd></dl>

Arguments

Compute grain roughness following Maynord (1991) — n_maynord1991

<dl>

<dt>grain</dt>
<dd>grain size (d90) in millimeters. The original model was calibrated
for 4.57 mm &lt; d90 &lt; 134 mm.</dd>


<dt>restrict</dt>
<dd>allows for function parameters to restrict certain values. Type bool. Default TRUE.</dd>

</dl>

n_maynord1991: Compute grain roughness following Maynord (1991)

Description

Usage

Value

Arguments

References

Examples