TR-55 definition

TR-55 means the United States department of agriculture, natural resources conservation service (previously soil conservation service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986, which is incorporated by reference for this chapter.

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TR-55 means the United States Department of Agriculture, Natural Resources Conservation Service (previously Soil Conservation Service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986.

TR-55 means the United States Department of Agriculture, Natural Resources

Examples of TR-55 in a sentence

• Department of Agriculture, Natural Resources Conservation Service, June 1986, Urban Hydrology for Small Watersheds, Technical Release No. 55 (TR-55), Second Edition.

• The meaning of “hydrologic soil group” and “runoff curve number” are as determined in TR-55.

• Separate curve numbers for pervious and impervious surfaces shall be used to calculate runoff volumes and not composite curve numbers as defined in TR-55.

• It shall be assumed “good hydrologic conditions” exist for appropriate land covers as identified in TR-55 or an equivalent methodology.

• The TR-55- specified curve numbers for other land uses shall be used.

• Separate curve numbers for pervious and impervious surfaces shall be used to calculate runoff volumes, and not composite curve numbers as defined in TR-55.

• Peak discharges shall be calculated using TR-55 runoff curve number methodology, Atlas 14 precipitation depths, and the appropriate NRCS Wisconsin MSE3 or MSE4 precipitation distribution.

• Time of concentration (tc) estimates for existing conditions in each sub-watershed were determined using the method described in the NRCS TR-55 manual.

• Our experience with surface hydrology includes urban runoff analysis using HEC and TR55 software and alluvial fan runoff analysis using FLO2D software.

• The runoff rate shall be determined by a computer model that can generate hydrographs based on the NRCS TR-55 time of concentration and curve number calculation methodologies and the 24-hour NRCS Type 2 Rainfall Distribution.

More Definitions of TR-55

TR-55 means the United States Department of Agriculture, Natural Resources Conservation Service (previously Soil Conservation Service), Urban Hydrology for Small

TR-55 means the United States Department of Agriculture, Natural Resources Conservation Service (previously Soil Conservation Service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986, which is incorporated by reference for this chapter.

TR-55 means the United States Department of Agriculture, Soil Conservation Service, “Urban Hydrology for Small Watersheds,” Technical Release 55, June 1992.

TR-55 means the United States Department of Agriculture, Natural Resources Conservation Service (previously Soil Conservation Service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986.(53) “Type II distribution” means a rainfall type curve as

TR-55 means the US Department of Agriculture, Natural Resources Conservation Service, Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986.

TR-55 means the United States Department of Agriculture, Natural Resources Conservation Service (formerly Soil Conservation Service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986, or Technical Release 55 for Windows (Win TR-55), 2002.