Title
Consider/Discuss/Act on a Resolution of the City of McKinney, Texas, Authorizing Variances to the No Floodplain Rise Restriction of the Stormwater Ordinance for Certain Properties Along Honey Creek and the East Fork of the Trinity River Near U.S. 75
Summary
COUNCIL GOAL: Enhance the Quality of Life in McKinney
Direction for Strategic and Economic Growth
MEETING DATE: March 21, 2017
DEPARTMENT: Development Services / Engineering
CONTACT: Mark Hines, PE, Director of Engineering
RECOMMENDED CITY COUNCIL ACTION:
* Approval of Resolution.
ITEM SUMMARY:
* Developers along Honey Creek and the East Fork of the Trinity River (EFTR) are proposing projects that will increase the fully-developed, 100-year floodplain along both creeks by no more than 0.06 feet (approximately 3/4") on properties upstream and downstream of U.S. 75. The location of the property is shown on the attached map.
* The Stormwater Ordinance prohibits increasing the fully-developed, 100-year floodplain on properties owned by others without the affected property owner's written consent and drainage or floodplain easements.
* Staff recommends approval of a variance to authorize the proposed increase in the floodplain up to a maximum of 0.06 feet.
* In order to alleviate any adverse impacts of the Water Surface Elevation (WSE) increase on the future development of affected adjacent properties, staff also recommends a variance to the Storm Water Management Ordinance to allow a decrease in the freeboard requirement on those affected properties by the same amount of the floodplain increase on said properties. Thus, instead of requiring 2.00 feet of freeboard, as little as 1.94 feet would be required. The affected properties are shown on the attached map along with the proposed change in floodplain elevation and corresponding reduction in the freeboard requirement.
* Affected property owners will receive notification of floodplain changes and variances granted.
BACKGROUND INFORMATION:
* Aft...
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