The city's intention is to minimize hazard to new development and also to prevent development and other alterations from increasing risk to other properties.
(Ord. 1395 § 1 (Exh. A), 2011; Ord. 1597 § 1 (Att. A), 2019)
Lands within the city of Leavenworth and its urban growth area (UGA), and outside of shoreline areas subject to the Shoreline Management Act, regardless of any formal identification, are designated and classified as follows:
A. 
All areas of special flood hazard indicated in the flood insurance study: city of Leavenworth, Washington, Chelan County and the accompanying flood insurance rate maps, as revised or amended: areas of special flood hazard.
B. 
Any areas of special flood hazard indicated in the flood insurance study: Chelan County, Washington: Unincorporated Areas and the accompanying flood insurance rate maps, as revised or amended, that are within the city or its UGA: areas of special flood hazard.
C. 
All additional flood hazard areas identified by any special or detailed study: areas of special flood hazard.
D. 
Riparian areas not shown as areas of special flood hazard indicated in the flood insurance study for the city of Leavenworth, Washington, and the accompanying flood insurance rate maps, as revised or amended: potential frequently flooded areas.
(Ord. 1395 § 1 (Exh. A), 2011; Ord. 1597 § 1 (Att. A), 2019)
A. 
Development in areas of special flood hazard within the city and its UGA must comply with the provisions of the city's Flood Damage Prevention Standards, Chapter 14.24 LMC, as amended.
B. 
In addition to the general critical area review provisions in Article VII of this chapter, development in potential frequently flooded areas within the city and its UGA shall be subject to the following:
1. 
Identification and Preliminary Evaluation. At a minimum, the 2016 Regional Stormwater/Wetland Plan, or as amended, and the Web Soil Survey shall be used to determine whether critical area review will be required for a proposed alteration, in completing a critical areas checklist or SEPA checklist, and in the city's review for the purpose of determining whether a critical areas study will be required.
2. 
Critical Area Study.
a. 
In addition to the general requirements for critical area studies, the required critical area study for any known or potential frequently flooded area shall include the following:
i. 
An assessment of the probable cumulative impacts of frequently flooded areas both to the proposed development and to existing or future development off the site; and
ii. 
A description of reasonable efforts made to apply mitigation sequencing, as defined in these regulations, to avoid, minimize, and otherwise mitigate impacts to development.
b. 
The administrator may request any other information reasonably deemed necessary to understand impacts to development.
c. 
The information provided by a critical area study will augment the database for the Leavenworth area maintained by the city.
3. 
Mitigation. At a minimum, the administrator shall require that development mitigate any risks to the proposed development or to existing or future development off the site that would be posed by frequently flooded areas.
(Ord. 1395 § 1 (Exh. A), 2011; Ord. 1597 § 1 (Att. A), 2019)