Garden City Idaho

Perch Meadows

Location: 6300 N. Ulmer Lane

Garden City, Idaho 83714

Garden CityIdaho


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Spencer Southbey
2020 Real Estate Guides

The project site is one of the last isolated islands of Ada County and will be annexed into Garden City. The site is surrounded by residential development with stub roads to the north and east that will be extended/connected as part of the project. Proposed construction includes ACHD roadways, Garden City water and sewer main extensions, and a private pressure irrigation system.

Stormwater runoff from all internal roadways and the front yards of all buildable lots will drain to a central pond via sheet flow, concrete gutter, pipe, and vegetated channel flow. Concentrated runoff will flow through two Aqua Swirl treatment manholes (or other treatment devices allowed by ACHD) prior to being discharged to vegetated swales that lead to the central pond. Sub-basins are identified on the drainage basin map.

The pond is planned to be about 10-feet deep to allow the colder deeper groundwater to circulate and reduce algae growth. Our surface irrigation water is also planned to discharge to the central pond. An overflow discharge from our project site is requested by the southern neighbors to help them maintain their rear yard pond amenity levels. Instead of the surface water discharging directly to the Dry Creek Canal at our northwest corner, it will be routed through the southern neighbors’ ponds before overflowing to the same canal near our southwest corner. During rain events, all stormwater from the internal public streets will discharge to the pond after treatment. A freeboard amount of approximately 2-feet will remain above the overflow outlet to account for stormwater storage. An orifice plate is planned at the outlet and is sized for the surface irrigation inlet flow, therefore restricting stormwater discharge to the southern neighbors. The water level will drop to the outlet elevation overtime as the pond hydraulically stabilizes with the groundwater table via permeation through the exposed native sands and gravels beneath the pond.

A design infiltration rate of 8 in/hr will be calculated across the wet footprint of the pond, and groundwater depth was encountered at less than 3 feet BGS (for further details see soils report by Natural Resource Solutions, Dated: August 6, 2019). Onsite groundwater was found to fluctuate between 2 to 5-feet deep Final groundwater readings were taken in the month of August 2019. The central pond was sized for the 100-year event.

Garden City Idaho- The quickest growing cultural and arts district of Boise, ID,


  • 6300 N Ulmer Lane


  • McWhirter Revocable Trust


  • 24 Building Lots
Boise School District
  • Grade School: Elementary
  • Jr High School: -  Jr. High School
  • High School: - High School

Community Home Owner Association Dues:

  • $TBD Setup/ Transfer Fee
  • $TBD monthly

Perch Meadows Garden City Idaho

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