§ 650.117. Content of design studies.

124 words·~1 min read·/us/cfr/t23/s§ 650.117·

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(a)The detail of studies shall be commensurate with the risk associated with the encroachment and with other economic, engineering, social or environmental concerns.

(b)Studies by highway agencies shall contain:

(1)The hydrologic and hydraulic data and design computations,

(2)The analysis required by § 650.115(a), and

(3)For proposed direct Federal highway actions, the reasons, when applicable, why FEMA criteria (44 CFR 60.3, formerly 24 CFR 1910.3) are demonstrably inappropriate.

(c)For encroachment locations, project plans shall show:

(1)The magnitude, approximate probability of exceedance and, at appropriate locations, the water surface elevations associated with the overtopping flood or the flood of § 650.115(a)(1)(ii), and

(2)The magnitude and water surface elevation of the base flood, if larger than the overtopping flood.

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44 CFR 60.3
24 CFR 1910.3

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§ 650.117

Content of design studies.

Cite44 CFR 60.3

Cite24 CFR 1910.3

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