Click on the following pictures for a more detailed description of Manning's 'n' value.

	n = 0.028	n = 0.050	n = 0.065
	n = 0.032	n = 0.53; 0.079	n = 0.073
	n = 0.038	n = 0.059	n = 0.75
	n = 0.043	n = 0.060