City of Spokane

Spokane Municipal Code

***Note: Many local criminal codes can now be located under Chapter 10.60 SMC while others are now cited under the Revised Code of Washington (RCW), which was incorporated into the municipal code in 2022. (See SMC 10.58.010). Code Enforcement, including Noise Control and Animal Regulations are located in Chapters 10.62 through 10.74.

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Title 17D
Chapter 17D.060
Section 17D.060.135
 

Title 17D City-wide Standards

Chapter 17D.060 Stormwater Facilities

Section 17D.060.135 Areas of Drainage Concern
  1. Purpose.

Areas of Drainage Concern are identified due to special geographic considerations that increase the likelihood of harmful impacts resulting from stormwater events. These impacts may include flooding, direct drainage to waterways, or capacity limitations in the combined sewer overflow system.

  1. Identification, Designation, and Mapping of Areas of Drainage Concern.

Data sources are available from the City of Spokane that are used in identifying Areas of Drainage Concern. Public mapping related to Areas of Drainage Concern is not guaranteed to pinpoint a drainage issue that may require submittal of an engineer’s drainage plan. Use of maps of Areas of Drainage Concern shall be for informational purposes only. In the event of a conflict between the map and the criteria set forth in this section, the criteria shall prevail.

  1. Characteristics.

Areas of Drainage Concern generally have at least one of the following characteristics:

      1. Poorly draining soils;
      1. Historic overflows of the wastewater system during rainfall events;
      1. Direct drainage to waterways;
      1. Topography
  1. The City Engineer shall determine whether a lot is considered an Area of Drainage Concern and whether an engineer’s drainage plan is required.

Date Passed: Monday, November 20, 2023

Effective Date: Monday, January 1, 2024

ORD C36459 Section 28