Completed Projects

Tree Farm Pond 'A'

How it Works

Tree Farm Pond 'A' prevents downstream flooding by detaining stormwater similar to a big bathtub. Large stormwater flows are collected from teh streets and enter the pond from a 5 1/2-foot diameter sotrm drain (the 100-year design storm lasts about four hours, with a peak flow rate of 450 cfs). Small, controlled-release outflow (lasts about four days with a peak of 5 cfs). Volume of water stored is about 21 acre-feet. Sediment and debris are left behind.

What It Does

Flood Control

The facility meets New Mexico Dam Safety Design criteria and is permitted by State Engineer File No. 4786.

The system is designed to contain and safely drain the 100-year storm event (defined as a 1% probability of occurring in any given year).

Dam safety is provided by select fill seepage control, concrete cutoff walls, and a reinforced concrete emergency spillway sized to safely pass the probable maximum flood.

The storm water flow is reduce from 450 cfs to fie cfs.

Runoff is slowly released into Tree Farm Pond 'B' and then into the Corrales Main Canal by permit with the Middle Rio Grande Conservancy District.

Dam safety is provided by select fill seepage control, concrete cutoff walls and a reinforced concrete emergency spillway sized to safely pass teh probably maximum flood.

Stormwater Quality

Floating debris and trash are collected at the outlet of Tree Farm Pond 'A'.

An oil/water separator collects remaining trash and oils at the outlet from Tree Farm Pond 'B' into the Middle Rio Grande Conservancy District's Corrales Main Canal.

The extended detention of runoff in Tree Farm Pond 'A' allows settlement of sediments and reduction of other pollutants.

NOTES:

one cubic foot per second (cfs) equals 4, 488 gallons per minute flow
one acre-foot equals the volume to cover one acre with water one foot deep, or 325,829 gallons

Bonus Benefits

Recreation & Multiple-Use

The site serves as an undeveloped, primitive open-space park

Education

A large concrete sign structure with two 2-foot by 3-foot panels is located adjacent to Tree Farm Pond 'A', along Meadowlark Lane. This sign describes both system function and history.

Three permanent survey control monuments were established to monitor pond performance and for public reference.