This section is not the offical site for the National Engineering Handbook. Erosion Model; Chapter 52: Field Procedures Guide for the Headcut Erodibility Index National Engineering Handbook, Section 5, NRCS (SCS), Supplement B. Reckendorf, Frank Handbook, Engineering Field Handbook, Part 654, August 2007. Engineering Field Tools - Waterway Design Tool - Video Series in the USDA, Agricultural Research Service, Agricultural Handbook 667, and also captured in Engineering Field Handbook and Vermont Supplements. Engineering Field Handbook. H_210_NEH_650 - Part 650 - Engineering Field Handbook. Documents Part 650 - Engineering Field Handbook. Preface, Table of Contents · Chapter 1 - Surveying · Chapter 2 - Estimating Runoff · Chapter 3 - Hydraulics · Chapter 4 1 Oct 2007 NRCS Engineering Field Handbook Part. 650, Chapter 7. Grassed Waterways, 1986. Agricultural Research Service, Agricultural. HandbookConservation Service (NRCS) National Engineering Handbook (NEH), Part. 650. This chapter is designated Engineering Field Handbook (EFH), Part. 650.13. The objective of this manual is to provide guidance in the use of basic engineering principles, techniques, and procedures for the planning, design, installation,