Attachment_2_-_Mean_Low_Water_Exhibit.pdf

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Attached to
Chesapeake and Ohio Canal National Historical Park
Solicitation number
140P3022R0021
Issued by

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This document contains an exhibit showing mean low water elevations and floodplain boundaries for a section of the Chesapeake and Ohio Canal National Historical Park. The related federal contract opportunity is solicitation number 140P3022R0021 to repair the Level 33 Wall and roadway along the canal. The National Park Service is seeking to repair approximately 390 square feet of revetment within the assumed ordinary high water mark and 10,200 square feet outside the boundary. Work will include structural improvements to the wall, canal prism, towpath, and construction of a ramp. The solicitation was issued by the Department of the Interior National Park Service National Office for repair work along the Chesapeake and Ohio Canal National Historical Park.

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266.5' 265.7' 265.7' 265.1' 267.2'

264.3' 263.1' 263.8' 262.7'

262.6' 262.2'

261.6'

261.9'

261.5' 261.2'

281.0' 281.6'

282.6' 284.2' 285.7' 286.8' 285.2' 279.8'

284.7'283.6' 282.5'

281.6' 281.9' 280.6' 278.2' 275.9'

275.1'

273.7' 272.2'

271.6'

EP285.56'

EP285.15'

EP283.95' EP282.67'

EP282.46'EP283.63'

EP281.47'

EP281.11' EP281.66'

EP281.92' EP

283.03'

EP

282.54' EP284.26'

EP284.76' EP286.15'

EP286.18' EP286.94'

EP287.11' EP286.36'

EP286.20'

EP281.02'

EP280.37'

EP284.23' EP281.51'

EP281.05'

EP278.70'

EP278.70'

EP276.84'

EP

276.73'

EP275.34'

EP275.56'

EP274.40'

EP274.09'

EP273.23'

EP273.74'

EP273.07'

EP272.52'

265.5' 264.8'

264.1' 263.9' 263.3'

263.5' 262.8' 262.5' 262.1'

261.6' 261.3'

261.2'

261.3'

261.4'

261.1'

281.4' 281.5' 282.5' 283.9' 286.0' 286.7' 285.7'

280.0'

280.8' 278.2' 276.2'

275.1'

273.9'

272.7'

272.0'

267.8' 269.1' 267.3'

267.8' 267.4'

267.2'

C&O CANAL

C&O CANAL

264.1' 264.2' 264.1' 263.7'

263.3'

263.9' 262.8'

262.9' 262.2'

262.2'

261.6' 261.5'

261.2'

261.6'

261.3' 261.6'

CONSTRUCTION RAMP

TO CANAL PRISM

LIMITS OF 100-YEAR

FLOODPLAIN - SEE FIRM

PANEL 24043C0455D

C&O

CANAL

TOWPATH

PROPOSED PROJECT LIMIT

OF DISTURBANCE (LOD)

\\vhb.com\gbl\proj\MetroDC\34232.15 CHOH_REVETMENT_LVL33\cad\ld\Planmisc\Floodplain Exhibits\Mean Low Water Exhibit.dwg

Date:

Prepared for:

Source:

ASSUMED ORDINARY HIGH WATER MARK (OHWM)

CHOH 245005 - Level 33 Wall Chesapeake & Ohio Canal National Historical Park

03/18/2022 NPS Review FEMA Flood Map Service Center

0 15 30 60 FEET

LEGEND

LOD WITHIN ASSUMED

ORDINARY HIGH WATER MARK

(OHWM)

AREA = 390 SQ FT

LOD OUTSIDE ASSUMED

ORDINARY HIGH WATER MARK

(OHWM)

AREA = 10,200 SQ FT

LIMITS OF STRUCTURAL

IMPROVEMENTS

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