Wayland Drive — Area Drainage Improvements | City of Fayetteville

Gradient regularly conducts detailed hydrologic and hydraulic (H&H) modeling, develops effective drainage improvement designs, and recommends cost-efficient solutions that reduce flooding impacts in residential and business areas.

Overview

Residential housing and several businesses in the Wayland Drive area experienced frequent flooding. In addition to the nuisance of a street being flooded, there is also a financial impact due to frequent repairs and short-term loss of business revenue. The street flooding also limits emergency vehicle access during certain rain events.

Gradient was hired to further study and develop a design of storm drainage system improvements to significantly reduce flooding in the Wayland Drive area. The project was based on mitigation measures as outlined in the study performed by Gradient entitled “Wayland Dr. at South Reilly Rd. — Drainage Improvement Options” and dated November 25, 2020.

The project could involve improvements from Cliffdale Road to the north down to Old Bunce Road to the south.

Gradient Solution

Gradient developed an H&H model using InfoWorks ICM to evaluate the hydraulic performance of pipes, inlets, and channels within the project area for the 2-, 10-, 25-, 50- and 100-year design events.

As a result of this analysis, Gradient has developed and analyzed multiple scenarios for potential drainage improvements. The model results indicated all proposed options would essentially eliminate flooding during the 10- year, 24-hour design storm for properties along South Reilly Road in the vicinity of Wayland Drive.

Gradient’s recommended scenario to the City avoids extensive improvements downstream which would result in more easement acquisitions, more construction cost, and more time to implement.