Climatic Influence on NRCS Curve Numbers Literature Review

Thompson, David

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Climatic Influence on NRCS Curve Numbers Literature Review

2000-10-01
By Thompson, David

File Language:

English

Details

Creators:

Thompson, David
Corporate Creators:

Texas Tech University. Center for Multidisciplinary Research in Transportation
Corporate Contributors:

Texas Department of Transportation
Subject/TRT Terms:
Publication/ Report Number:

TX/00/21 04-1
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

The Natural Resources Conservation Service (NRCS) runoff curve number method provides the basis for much hydraulic design, including that performed by the Texas Department of Transportation (TxDOT). An index, the runoff curve number, is used to represent the runoff-producing potential of soils in a given watershed. In current TxDOT practice, curve numbers depend on characteristics of the watershed such as land use, soil group, and antecedent-moisture conditions. The basic index so derived is modified for geographic location to include, theoretically, the sensitivity of the index to differences in climate. Furthermore, these curve numbers are assumed applicable for a wide range of additional design criteria such as drainage area precipitation duration, and precipitation intensity. Such assumptions have not been tested and there are considerable ramifications to the hydraulic design process if these assumptions do not hold. It hoped that several adjustments to standard curve numbers can be derived to account for the influence of the additional design criteria.
Format:

PDF
Funding:

0-2104
Download URL:

https://rosap.ntl.bts.gov/view/dot/86093/dot_86093_DS1.pdf
File Type:

[PDF - 901.73 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:79b42bafe98e9d4ffb58225fd0c4757b7d8de866f262ef690bea9ddc6505f8d0c9937b21c1c50f2c69479d95fbf4001a6aec909ed157628fa6b326255e09ed06

File Language:

English

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