Ordinance No. 83-20 CITY OF TIGARD, OREGON
ORDINANCE NO. 83 s20
AN ORDINANCE AMENDING THE NATURAL FEATURES AND OPEN SPACE ELEMENT OF THE
TIGARD COMPREHENSIVE PLAN FOR THE PURPOSE OF AMENDING THE FLOODWAY/GREENWAY
POLICY, AND DECLARING AN EMERGENCY.
WHEREAS, the City Council on January 24, 1983 voted unanimously to adopt
the Natural Features and Open Space element of the Comprehensive Plan of the
City of Tigard; and
WHEREAS, City Council amended the Natural Features and Open Space element
with policy 3.2.1 relative to land form alterations in the floodway on
March 2, 1983; and
WHEREAS, the City Council requested various changes be made to the
floodway policy at a public hearing.
NOW, THEREFORE,
THE CITY OF TIGARD ORDAINS AS FOLLOWS:
Section l: The Floodway Policy of the Natural Features and Open Space
Element of the Tigard Comprehensive Plan is amended as shown
in attached as Exhibit "A".
Section 2: In order to provide a uniform date for the effectiveness of
this series of Comprehensive Plan revisions to be adopted by
the City Council in 1983, an emergency is declared and this
portion of the Comprehensive Plan shall become effective on
April 1, 1983.
PASSED: By hL2 1.bl,,� vote of all Council members present, after being
read- y umbery nd title only, this day of f� �; 1983.
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Recorder - City of Tigan
APPROVED: By the Mayor, this day of j�,ph� , 1983.
Mayor - City of Tigard
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ORDINANCE NO. 83- `
10447A)
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#3 As Amended
3.2.1 THE CITY SHALL PROHIBIT ANY LAND FORM ALTERATIONS OR DEVELOPMENTS IN
THE 100-YEAR FLOODPLAIN WHICH WOULD RESULT IN ANY RISE IN ELEVATION
OF THE 100-YEAR FLOODPLAIN.
3.2.2 THE CITY SHALL:
a. PROHIBIT LAND FORM ALTERATIONS AND DEVELOPMENT IN THE FLOODWAY*,
EXCEPT ALTERATIONS MAY BE ALLOWED WHICH PRESERVE OR ENHANCE THE
FUNCTION AND MAINTENANCE OF THE ZERO-FOOT RISE FLOODWAY*; AND
b. PROHIBIT LAND FORM ALTERATIONS OR DEVELOPMENT IN THE FLOODPLAIN*
OUTSIDE THE ZERO-FOOT RISE FLOOWDAY* EXCEPT AS FOLLOWS:
1. LAND FORM ALTERATIONS SHALL BE ALLOWED WHICH PRESERVE OR
ENHANCE THE FUNCTION OF THE ZERO-FOOT RISE FLOODWAY*. F
E SHALL BE ALLOWED WHERE "
2. LAND FORM ALTERATIONS AND DEVELOPMENT L �
BOTH SIDES OF THE FLOODPLAIN* ARE DESIGNATED AS EITHER
INDUSTRIAL OR COMMERCIAL ON THE COMPREHENSIVE PLAN MAP; AND
THE FACTORS SET FORTH IN POLICY 3.2.3 CAN BE SATISFIED.
3. LAND FORM ALTERATIONS AND DEVELOPMENT SHALL BE ALLOWED WHERE '
ONE SIDE OF THE FLOODPLAIN* IS PLANNED FOR COMMERCIAL AND
INDUSTRIAL USE SUBJECT TO THE FOLLOWING LIMITATIONS:
(a) THE LAND FORM ALTERATION OR DEVELOPMENT IS ON LAND
DESIGNATED ON THE COMPREHENSIVE PLAN MAP FOR COMMERCIAL
OR INDUSTRIAL USE;
(b) THE APPLICANT CAN SHOW THAT ALTERATIONS OR DEVELOPMENT
INTO THE FLOODPLAIN* IS REASONABLE AND NECESSARY TO
BETTER ECONOMIC USE OF THE SITE;
(c) THE FACTORS SET FORTH IN POLICY 3.2.3 CAN BE SATISFIED.
3.2.3 WHERE, LAND FORM ALTERATIONS AND DEVELOPMENT ARE ALLOWED WITHIN THE
100-YEAR FLOODPLAIN* OUTSIDE THE ZERO-FOOT RISE FLOODWAY*, THE CITY
SHALL REQUIRE:
a. THE STREAMFLOW CAPACITY. OF THE ZERO-FOOT RISE FLOODWAY* BE
MAINTAINED;
b. ENGINEERED DRAWINGS AND DOCUMENTATION SHOWING THAT THERE WILL BE
NO DETRIMENTAL UPSTREAM OR DOWNSTREAM CHANGES IN THE FLOODPLAIN*
AREA, AND THAT THE CRITERIA SET FORTH IN THE SENSITIVE LANDS
SECTION OF THE CODE HAVE BEEN MET (See FIS September 1971);
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*The Floodplain and Floodway as defined by the Flood Insurance Study for the
City of Tigard dated September 1, 1981.
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__ THE PLANTING Of' AN EVERGREEN BUFFER ON THE COMMERCIAL OR
INDUSTRIAL LAND ABUTTING RESIDENTIAL LAND WHICH SCREENS THE
DEVELOPMENT FROM VIEW BY THE ADJOINING RESIDENTIAL LAND, AND
WHICH IS OF SUFFICIENT WIDTH TO BE NOzSE ATTENUATING; AND
d. THE DEDICATION OF SUFFICIENT OPEN LAND AREA FOR GREENW.A.Y {
ADJOINING THE FLOODPLAIN* INCLUDING PORTIONS AT A SUITABLE
ELEVATION FOR If& CONSIRUCiiON OF A PEDESTRIAN/BICYCLE PAThWAY E
WITHIN THE FLOODPLAIN* IN ACCORDANCE WITH THE ADOPTED PEDESTRIAN
BICYCLE PATHWAY PLAN.
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*The Floodplain and Floodway as defined by the Flood Insurance Study for the
City of Tigard dated September 1, 1981.
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