Underdraining has been recognized as one of the major capital-intensive
agricultural improvements of the nineteenth century. Over half the
agricultural area of England is subject to waterlogging and is in need
of some form of underdraining, rendering the improvement both
technically and economically basic to much of English agriculture. By
removing excess soil water, the object of underdraining was to reproduce
as far as possible the conditions of free-draining land, which was
workable all year round, and to create an optimum soil-moisture content
for both plant growth and cultivation. Despite the necessity for the
improvement, a wide-ranging debate exists in the literature on the
extent, effectiveness and agricultural importance of underdraining in
the nineteenth century. The present study attempts to resolve this
debate. By examining the evidence of draining loans under the Public
Money Draining Acts and of the various land improvement companies and
the accounts of estates in Devon, Northamptonshire and Northumberland, a
precise record has been provided for the, first of the spread of
underdraining in England in the nineteenth century, of the factors
involved in its adoption and of its impact on agricultural practice in
that period.