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Calculate Time of Concentration (hr)

Added Mar 13, 2015 by harmsen1000 in Engineering

Time of concentration equation as presented in the text Soil and Water Conservation Engineering, 2006, 5th Ed., by Delmar et al.

SURFACE RUN OFF (mm) - CURVE NUMBER APPROACH

Added Jul 29, 2010 by harmsen1000 in Earth Sciences

Surface runoff (RO) is estimated by the USDA NRCS Curve Number (CN) method. Note to user: Sorry about all the decimal points in the results. Fangmeier, D. D., W. J. Elliot, S. R. Workman, R. L. Huffman, and G. O. Schwab, 2005. Soil and Water Conservation Engineering, Fifth Edition. pp. 528.


Crop Water Use (ET in mm)

Added Jul 29, 2010 by harmsen1000 in Earth Sciences

Hargreaves, G. H. and Z. A. Samani, Reference Crop Evapotranspiration from Temperature. Appl. Eng. Agric., ASAE. 1(2). 1985,. pp.96-99.


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