Transcription of HIGHWAY DRAINAGE MANUAL
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HIGHWAY DRAINAGE MANUAL
GHWAY Maryland Depapament of &nspo~at~on State HIGHWAY Adm~nfstmtlon GHWAV MANUAL MARY LAN D DEPARTMENT OF f RANSPORTATION STATE HIGHWAY ADMINISTRATION PREFACE In 1966 House Document 465 was published by the Task Force on Federal Flood Control Pol icy. Such act was later followed by the 1969 Environmental Protec- ti on Act. After numerous intervening legal acts associ ated with envi ronmental matters, the Water Resources Council pub1 ished the following document "A Unified National Program for Flood Plain Management", dated September 1979. Such document sets forth the Federal requirements to meet Executive Order 11998. The State of Maryland, since the formation of the Department of Natural Resources, in 1972, has steadily pursued the task of developing plans for regulating and/or assisting in the regulation of activities within the 100 year flood plain.
apply to drainage areas less than 400 acres. An exception to the 400 acre criteria is where the hydrologic/hydraul ic needs of larger drainage areas can be met with the use of pipe and/or pipe arch construction. (Such work then fa1 1 s within the Division of Highway Development Is area of responsibi 1 - ity).
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