Caption:  The Chart Table stetson_d50.xls.db shows bed surface particle size statistics for Corte Madera Creek tributaries in 1999. Data were collected by Stetson Engineers, Inc. A total of 21 pebble counts were collected throughout the watershed. See full report in KRIS bibliography. D50 is the median surface particle size, and D84 refers to the particle size with 84% cumulative particle distribution finer than. Mannings_n was computed from Limerinos equation, 1/sqrt (f) = 1.16 + 2.0 log10(R/D84). Mannings n = 0.0926 R**(1/6)/(1/sqrt(f)) where R is the hydraulic radius, assumed to be 1 foot. SLOPE was determined from step-backwater calculations using the USACE HEC-2 program.

 50 rows of a possible 510 have been displayed.

STREAM	D50	D84	MANNINGS_n	SLOPE
SAN ANSELMO CR	41.3	77.2	0.0394	0.0085
ROSS CR	36.7	59.9	0.036	0.00445
FAIRFAX CR	28.1	42.6	0.0323	0.0044
LARKSPUR CR	17	34.4	0.0303	0.0035
SLEEPY HOLLOW CR	22.3	37.8	0.0312	0.003
SORICH CR	30.2	54.2	0.0348	0.00295
DEER PARK CR	23.2	43.9	0.0326	0.0027
UPPER SAN ANSELMO CR	65	166	0.0548	0.00131
WOOD LANE CR	22.7	44.6	0.0327	0.00109