age 1 of 5 ssue ate: ay 26 216 ffective ate: eptember 14 216 ase o.: 15--288 - ederal mergency anagement gency ashington.. 2472 V V J Q istrict of olumbia ashington V V.: 1 17h treet evee otomac ederal riangle rea X : 8.891-77.4 : Q : 8 : *.: 8 : eptember 27 21 V : *.: 9 : eptember 27 21 : *.: 157 : eptember 27 21 nclosures reflect changes to flooding sources affected by this revision. * - lood nsurance ate ap V onstitution ardens ond - just southwest of the intersection of onstitution venue orthwest and 17th treet orthwest. ee age 2 for dditional looding ources ederal riangle onding reas - an area approximately bounded by 17th treet orthwest to the east treet orthwest to the north ew Jersey venue outheast to the east and the otomac iver to the south. V looding ource ffective looding evised looding ncreases ecreases onstitution ardens ond Zone X (shaded Zone o s* s ederal riangle onding reas Zone Zone Zone Zone X (shaded * s - ase lood levations his document provides the determination from the epartment of omeland ecurity's ederal mergency anagement gency ( regarding a request for a etter of ap evision ( for the area described above. sing the information submitted we have determined that a revision to the flood hazards depicted in the lood nsurance tudy ( report and/or ational lood nsurance rogram ( map is warranted. his document revises the effective map as indicated in the attached documentation. lease use the enclosed annotated map panels revised by this for floodplain management purposes and for all flood insurance policies and renewals in your community. his determination is based on the flood data presently available. he enclosed documents provide additional information regarding this determination. f you have any questions about this document please contact the ap nformation exchange toll free at 1-877-6-2627 (1-877- or by letter addressed to the learinghouse 847 outh ickett treet lexandria V 224-465. dditional nformation about the is available on our eb site at atrick ick. acbibit.. ranch hief ngineering ervices ranch ederal nsurance and itigation dministration 15--288 12---
age 2 of 5 ssue ate: ay 26 216 ffective ate: eptember 14 216 ase o.: 15--288 - ederal mergency anagement gency ashington.. 2472 V ( V V ederal riangle onding reas - an area approximately bounded by 17th treet orthwest to the east treet orthwest to the north ew Jersey venue outheast to the east and the otomac iver to the south. V looding ource ffective looding evised looding ncreases ecreases ederal riangle onding reas o s* s * s - ase lood levations his determination is based on the flood data presently available. he enclosed documents provide additional information regarding this determination. f you have any questions about this document please contact the ap nformation exchange toll free at 1-877-6-2627 (1-877- or by letter addressed to the learinghouse 847 outh ickett treet lexandria V 224-465. dditional nformation about the is available on our eb site at atrick ick. acbibit.. ranch hief ngineering ervices ranch ederal nsurance and itigation dministration 15--288 12---
age of 5 ssue ate: ay 26 216 ffective ate: eptember 14 216 ase o.: 15--288 - ederal mergency anagement gency ashington.. 2472 V ( / e have made this determination pursuant to ection 26 of the lood isaster rotection ct of 197 (.. 9-24 and in accordance with the ational lood nsurance ct of 1968 as amended (itle X of the ousing and rban evelopment ct of 1968.. 9-448 42... 41-4128 and 44 art 65. ursuant to ection 161 of the ational lood nsurance ct of 1968 as amended communities participating in the are required to adopt and enforce floodplain management regulations that meet or exceed criteria. hese criteria including adoption of the report and and the modifications made by this are the minimum requirements for continued participation and do not supersede more stringent tate/ommonwealth or local requirements to which the regulations apply. e based this determination on the 1-percent-annual-chance discharges computed in the submitted hydrologic model. uture development of projects upstream could cause increased discharges which could cause increased flood hazards. comprehensive restudy of your community s flood hazards would consider the cumulative effects of development on discharges and could therefore indicate that greater flood hazards exist in this area. our community must regulate all proposed floodplain development and ensure that permits required by ederal and/or tate/ommonwealth law have been obtained. tate/ommonwealth or community officials based on knowledge of local conditions and in the interest of safety may set higher standards for construction or may limit development in floodplain areas. f your tate/ommonwealth or community has adopted more restrictive or comprehensive floodplain management criteria those criteria take precedence over the minimum requirements. e will not print and distribute this to primary users such as local insurance agents or mortgage lenders; instead the community will serve as a repository for the new data. e encourage you to disseminate the information in this by preparing a news release for publication in your community's newspaper that describes the revision and explains how your community will provide the data and help interpret the maps. n that way interested persons such as property owners insurance agents and mortgage lenders can benefit from the information. his revision involves an accredited levee system. our community is responsible for maintaining and disseminating information such as the estimated level of protection provided (which may exceed the 1-percent-annual-chance level and mergency ction lan for the levee system shown as providing protection. o mitigate flood risk in residual risk areas property owners and residents are encouraged to consider flood insurance and flood proofing or other protective measures. or more information on flood insurance interested parties should visit the ebsite at his determination is based on the flood data presently available. he enclosed documents provide additional information regarding this determination. f you have any questions about this document please contact the ap nformation exchange toll free at 1-877-6-2627 (1-877- or by letter addressed to the learinghouse 847 outh ickett treet lexandria V 224-465. dditional nformation about the is available on our eb site at atrick ick. acbibit.. ranch hief ngineering ervices ranch ederal nsurance and itigation dministration 15--288 12---
age 4 of 5 ssue ate: ay 26 216 ffective ate: eptember 14 216 ase o.: 15--288 - ederal mergency anagement gency ashington.. 2472 V ( e have designated a onsultation oordination fficer ( to assist your community. he will be the primary liaison between your community and. or information regarding your please contact: r. ugene. ruber irector itigation ivision ederal mergency anagement gency egion ne ndependence all ixth loor 615 hestnut treet hiladelphia 1916-444 (215 91-5512 e will not physically revise and republish the for your community to reflect the modifications made by this at this time. hen changes to the previously cited panels warrant physical revision and republication in the future we will incorporate the modifications made by this at that time. his determination is based on the flood data presently available. he enclosed documents provide additional information regarding this determination. f you have any questions about this document please contact the ap nformation exchange toll free at 1-877-6-2627 (1-877- or by letter addressed to the learinghouse 847 outh ickett treet lexandria V 224-465. dditional nformation about the is available on our eb site at atrick ick. acbibit.. ranch hief ngineering ervices ranch ederal nsurance and itigation dministration 15--288 12---
age 5 of 5 ssue ate: ay 26 216 ffective ate: eptember 14 216 ase o.: 15--288 - ederal mergency anagement gency ashington.. 2472 V ( V notice of changes will be published in the ederal egister. his information also will be published in your local newspaper on or about the dates listed below and through s lood azard apping eb site at https://www.floodmaps.fema.gov/fhm/cripts/bfe_main.asp. ame: he ashington imes ates: June 2 216 and June 9 216 ithin 9 days of the second publication in the local newspaper a citizen may request that we reconsider this determination. ny request for reconsideration must be based on scientific or technical data. herefore this letter will be effective only after the 9-day appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. ntil this is effective the revised flood hazard information presented in this may be changed. his determination is based on the flood data presently available. he enclosed documents provide additional information regarding this determination. f you have any questions about this document please contact the ap nformation exchange toll free at 1-877-6-2627 (1-877- or by letter addressed to the learinghouse 847 outh ickett treet lexandria V 224-465. dditional nformation about the is available on our eb site at atrick ick. acbibit.. ranch hief ngineering ervices ranch ederal nsurance and itigation dministration 15--288 12---
1295 1 X 2 66 J V 7m 1: 1-- Z V. V V. " V ". evee Z (.4 evee 1 15 17 V V Z 6m V ac i ve eawall eawall 1 to m ashington hannel idal asin r Z o 14 8. V 14 15 ( 1. V X V 12 V 95 Z 2m V rid nd red ick o e tr i ch mo V in e ge rid g ell e ow 12 or ial em u be a V 5m 8º 52'." 77º 1' 52.5" 22m o ch am 8º 52'.". V & 95 eorge ason emorial ridge 77º ' 45." V V J 2 212 1 V sb ur g Z 14 1 Z (.2 Z X evee ( 1. rlington emorial ridge 16 Z X V V Z 17 V 14 14 14 15 66 istrict of olumbia 1 heodore oosevelt emorial ridge 2 22 15 445 & 8m 19 V 18 21 66 2 15 V 24 V 22 riveway 25 26 2 29 t ridge. V 26 1 45 8º 54' 22.5" t ridge ennsylvania ve ridge 21 21 22 ock reek otomac wy ridge. 28 77º 1 52.5" ock reek 8º 54' 22.5" 77º ' 45." Zone V 99 Z Z ith or epth Zone V egulatory loodway.2% nnual hance lood azard reas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile Zone X uture onditions 1% nnual hance lood azard Zone X rea with educed lood isk due to evee ee otes. Zone X reas etermined to be utside the.2% nnual hance loodplain Zone X rea of ndetermined lood azard Zone hannel ulvert or torm ewer evee ike or loodwall %! ( 8 18.2 17.5 ross ections with 1% nnual hance ater urface levation ( oastal ransect oastal ransect aseline rofile aseline ydrographic eature ase lood levation ine ( imit of tudy Jurisdiction oundary ommunities annexing land on adjacent panels must obtain a current copy of the adjacent panel as well as the current ndex. hese may be ordered directly from the lood ap ervice enter at the number listed above. or community and countywide map dates refer to the lood nsurance tudy report for this jurisdiction. o determine if flood insurance is available in the community contact your nsurance agent or call the ational lood nsurance rogram at 1-8-68-662. ase map files were obtained from. hese files were compiled at a scale of 1:1 based on 22 aerial photography produced by. dditional information may have been derived from other sources. V : heck with your local community to obtain more information such as the estimated level of protection provided (which may exceed the 1-percent-annual-chance level and mergency ction lan on the levee system(s shown as providing protection for areas on this panel. o mitigate flood risk in residual risk areas property owners and residents are encouraged to consider flood insurance and floodproofing or other protective measures. or more information on flood insurance interested parties should visit ithout ase lood levation ( ://..V or information and questions about this lood nsurance ate ap ( available products associated with this including historic versions the current map date for each panel how to order products or the ational lood nsurance rogram ( in general please call the ap nformation exchange at 1-877-- (1-877-6-2627 or visit the lood ap ervice enter website at http://msc.fema.gov. vailable products may include previously issued etters of ap hange a lood nsurance tudy eport and/or digital versions of this map. any of these products can be ordered or obtained directly from the website. ap rojection: niversal ransverse ercator Zone 18; orth merican atum 198; estern emisphere; Vertical atum: 88 Z X Z 1 inch = 5 feet 1:6 5 1 15 2 feet meters 6.. 18 1 anel ontains: ashington.. 12 16 17* 14 18 19 75* 56 57 1 18 X V V: eptember 14 216 V 1.1.1. 8 * V 27 21
15 8º 54' 22.5" Z X ://..V ithout ase lood levation ( Zone V 99 Z Z ith or epth Zone V egulatory loodway.2% nnual hance lood azard reas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile Zone X uture onditions 1% nnual hance lood azard Zone X rea with educed lood isk due to evee ee otes. Zone X reas etermined to be utside the.2% nnual hance loodplain Zone X rea of ndetermined lood azard Zone hannel ulvert or torm ewer evee ike or loodwall %! ( 8 18.2 17.5 ross ections with 1% nnual hance ater urface levation ( oastal ransect oastal ransect aseline rofile aseline ydrographic eature ase lood levation ine ( imit of tudy Jurisdiction oundary or information and questions about this lood nsurance ate ap ( available products associated with this including historic versions the current map date for each panel how to order products or the ational lood nsurance rogram ( in general please call the ap nformation exchange at 1-877-- (1-877-6-2627 or visit the lood ap ervice enter website at http://msc.fema.gov. vailable products may include previously issued etters of ap hange a lood nsurance tudy eport and/or digital versions of this map. any of these products can be ordered or obtained directly from the website. 4 4 2 4 V V V 28 21 1.6 26m V 5m Z 8º 52'." 77º '." ap rojection: niversal ransverse ercator Zone 18; orth merican atum 198; estern emisphere; Vertical atum: 88 1 inch = 5 feet 1:6 5 1 or community and countywide map dates refer to the lood nsurance tudy report for this jurisdiction. 15 V : heck with your local community to obtain more information such as the estimated level of protection provided (which may exceed the 1-percent-annual-chance level and mergency ction lan on the levee system(s shown as providing protection for areas on this panel. o mitigate flood risk in residual risk areas property owners and residents are encouraged to consider flood insurance and floodproofing or other protective measures. or more information on flood insurance interested parties should visit ase map files were obtained from. hese files were compiled at a scale of 1:1 based on 22 aerial photography produced by. dditional information may have been derived from other sources. 1 ommunities annexing land on adjacent panels must obtain a current copy of the adjacent panel as well as the current ndex. hese may be ordered directly from the lood ap ervice enter at the number listed above. o determine if flood insurance is available in the community contact your nsurance agent or call the ational lood nsurance rogram at 1-8-68-662. V 1 1: 1--- Z V. V V. " V ". Z X 4 25m 2 6 V 695 ( 1. V Z X V V Z X 24m 77º 1' 52.5" V Z Z V J 8º 52'." Z ( 1. 6m. Z (.2 Z X 2 2 V 4 6 7m 4 6 V Z X ashington hannel V 1 Z ( 1. 95 eawall ( 1. 7 Z X 1 V V V Z ( 12 ( 1. V 12 X 1 9 1 istrict of olumbia 1 Z X Z (.2 V ( 1. V 4 12 X Z (.2 Z X 12 V V J 2 212 1 Z X V Z (.2 ( 1. Z X 445 ( 1. Z X J 1 V ( 1. ( 1. Z X 8 7 9 1 95 8m 1 ( 1. Z (.2 V 1 1 4 5 Z X 1 1/2 8 12 1: 1-- Z V. V V. " V ". 8º 54' 22.5" 1 J 45 6 V 1 1 1 77º." 2 77º 1' 52.5" 2 feet meters 6.. 19 1 anel ontains: ashington.. 16 17* 6 18 19 8 56 57 76 1 19 X V V: eptember 14 216 V 2.1.. 9 * V 27 21
1: 1--- Z V. V V. " V ". ( 1. 77º '." V Z X V 4 eawall 1 o nac.6 evee V 2 5 4 V 6 1. V 4m 1.6 Z 2 ashington hannel rederick ouglass emorial ridge 1 V iver s ti a V V 28 21 Z 1 V 1.6 Q evee. istrict of olumbia 1 8º 52'." Z 4 V V J 28 216 1.6 Z eawall 77º 1' 52.5" 8º 52'." 44 V 15 Z V eawall oto V.6 1 r ive mac 1.6 V V J 28 216 295 Z Z X ://..V ithout ase lood levation ( Zone V 99 Z Z ith or epth Zone V egulatory loodway.2% nnual hance lood azard reas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile Zone X uture onditions 1% nnual hance lood azard Zone X rea with educed lood isk due to evee ee otes. Zone X reas etermined to be utside the.2% nnual hance loodplain Zone X rea of ndetermined lood azard Zone hannel ulvert or torm ewer evee ike or loodwall %! ( 8 18.2 17.5 ross ections with 1% nnual hance ater urface levation ( oastal ransect oastal ransect aseline rofile aseline ydrographic eature ase lood levation ine ( imit of tudy Jurisdiction oundary V 25m or information and questions about this lood nsurance ate ap ( available products associated with this including historic versions the current map date for each panel how to order products or the ational lood nsurance rogram ( in general please call the ap nformation exchange at 1-877-- (1-877-6-2627 or visit the lood ap ervice enter website at http://msc.fema.gov. vailable products may include previously issued etters of ap hange a lood nsurance tudy eport and/or digital versions of this map. any of these products can be ordered or obtained directly from the website. ommunities annexing land on adjacent panels must obtain a current copy of the adjacent panel as well as the current ndex. hese may be ordered directly from the lood ap ervice enter at the number listed above. or community and countywide map dates refer to the lood nsurance tudy report for this jurisdiction. o determine if flood insurance is available in the community contact your nsurance agent or call the ational lood nsurance rogram at 1-8-68-662. ase map files were obtained from. hese files were compiled at a scale of 1:1 based on 22 aerial photography produced by. dditional information may have been derived from other sources. V : heck with your local community to obtain more information such as the estimated level of protection provided (which may exceed the 1-percent-annual-chance level and mergency ction lan on the levee system(s shown as providing protection for areas on this panel. o mitigate flood risk in residual risk areas property owners and residents are encouraged to consider flood insurance and floodproofing or other protective measures. or more information on flood insurance interested parties should visit 26m X 2m 5 V V r otomac ive 24 m 77º 1' 52.5" 4 1.4 V J 2 istrict of olumbia 1 evee Z 8º 5' 7.5" m V evee ea all V 6 1. ti s aco n r ive a V 5 eawall 8º 5' 7.5" 77º '." ap rojection: niversal ransverse ercator Zone 18; orth merican atum 198; estern emisphere; Vertical atum: 88 1 inch = 5 feet 1:6 5 1 15 2 feet meters 6.. 57 1 anel ontains: ashington.. 18 19 8 56 57 76 58 59 78 1 57 X V V: eptember 14 216 V 2.1.. 157 * V 27 21