Tr 55 form 2026

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The document is a worksheet from the U.S. Department of Agriculture's Natural Resources Conservation Service, specifically designed for calculating runoff curve numbers and runoff for various storm events. It includes sections for inputting soil information, cover descriptions, and rainfall data to determine runoff based on established formulas and tables.

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Click ‘Get Form’ to open the TR 55 Worksheet in the editor.
Begin by entering the project details, including 'Designed By', 'Date', and 'Location' in the designated fields.
In Section 1, input the soil name and hydrologic group as per Appendix A. Enter the Runoff Curve Number (CN) and cover description, ensuring to specify treatment and hydrologic condition.
For each CN source, fill in a new line with the corresponding area in acres or square miles. Calculate the product of CN and area for totals.
Proceed to Section 2 where you will enter data for Storm #1, #2, and #3. Input frequency, rainfall (P), and calculate runoff (Q) using provided tables or equations.
Once completed, utilize options like 'Print Form', 'Reset Form', or 'Save Form' to manage your document effectively.

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