A FORTRAN 77 computer program (LEVSEEP), developed to analyze levee underseepage on IBM PC compatible microcomputers with an 8087 math coprocessor. The software and associated equipment plots cross sections and piezometer data; calculates seepage flow and substratum pressure; analyzes landside berm, river side blanket, cutoff and relief well control measures; and finally, estimates the construction cost of these alternatives.

Computer program developed to predict underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform thickness with horizontal boundaries.

"This is one in a series of scientific reports documenting the findings of studies conducted under the Interagency Field Verifications of Testing and Predictive Methodologies for Dredged Material Disposal Alternatives (referred to at the Field Verification Program or FVP). This program is a comprehensive evaluation of environmental effects of dredged material disposal under conditions of upland and aquatic disposal and wetland creation."

From addendum: . Part 3 of Technical Report CERC-83-1 describes the general cartographic process used to produce the shoreline position digital data base and maps from which the attached set of 18 composite shoreline position map reproductions were made. The report also describes quality control methods, potential error sources, and probable ranges of error for this process.

This document contains maps of Tybee Island, Georgia to Cape Fear, North Carolina studying their cooperative shoreline movement.

The report describes the results of erosion and soil characterization tests performed on cohesive soils. Appendices to the report include plots of shear stress versus erosion rate for remolded and undisturbed soils.

"This report describes work performed by the U.S. Environmental Protection Agency (EPS), Environmental research laboratory, Narragansett, R.I. (ERLN), as part of the Interagency Field verification of Testing and predictive Methodologies for Dredged Material Disposal Alternatives Program or the Field Verification Program (FVP)."