A table containing the type of channel and description along with the minimum, normal, and maximum value of n, if it exists. n is the "Gauckler- Manning coefficient (commonly called Manning's n)" and it's dimensionless. Source: Manning formula.
A data.table data frame with 97 rows and 4 variables:
Type of channel name and any descriptive information
Minimum n value
Normal n value
Maximum n value
This data is from FishXing Version 3.0 Beta (2006) by Michael Furniss, Michael Love, Susan Firor, Kathleen Moynan, Antonio Llanos, Jeff Guntle, and Robert Gubernick. See http://www.fsl.orst.edu/geowater/FX3/help/8_Hydraulic_Reference/Mannings_n_Tables.htm. The original data source is Ven Te Chow, Open-Channel Hydraulics, New York City, York: McGraw-Hill, 1959.
Wikimedia Foundation, Inc. Wikipedia, 26 November 2015, “Manning formula”, https://en.wikipedia.org/wiki/Manning_formula.