Inspecting and Cleaning Subsurface Drain Systems
Inspecting and Cleaning Subsurface Drain Systems

Author: L. B. Grass

Publisher:

Published: 1975

Total Pages: 24

ISBN-13:

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Diagnosis of drain failure at an early stage is extremely important to detect and correct the problem before crop losses become serious or topsoil is damaged. Subsurface drainage systems are expensive, long-term investments but they are important to modern mechanized agriculture. The farmer can protect his investment and assure continuing adequate performance of his drainage system by initiating an inspection and maintenance program as a regular part of his farming operations. Drain performance should be evaluated at least once a year on a regular basis and at any time there is a hint of a developing drainage problem.

Performance of Subsurface Drains at Selected Airfields During the 1960 Frost Melting Period
Performance of Subsurface Drains at Selected Airfields During the 1960 Frost Melting Period

Author: William C. Sayman

Publisher:

Published: 1964

Total Pages: 30

ISBN-13:

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During the 1960 frost melting period, the performance of subsurface drainage systems was investigated at selected airfields in the northern continental United States by periodic observations at manholes and/or risers. Records of air temperature, subsurface temperature, and precipitation were also maintained. The observations were one-time 'spot' notations, intended to determine the feasibility of performing more comprehensive studies and no quantitative measurements were undertaken; nor do the data obtained permit evaluation as to the overall effectiveness of the inspected systems or the validity of the criteria used in their design. However, the study showed that the observed subdrain systems were generally performing their function of removing subsurface water. The study also confirms the need for periodic inspection and maintenance of all subsurface systems. (Author).