Project Goal: Proper maintenance is critical to ensure the performance of flood control infrastructure. Sometimes, that maintenance requires localized replacements and improvements. The Agency and Area-Wide Flood Control Rehabilitation XII project will be making critical improvements to 15 sites across the jurisdiction. Work began in late April 2025 (in preparation for the monsoon season) and is scheduled to continue until December 2026.
Hahn Arroyo
Shown here are the before and after photos of the January 2026 repair to a damaged section of the Hahn Arroyo at its intersection with Carlisle Blvd. Before, exposed rebar was sticking out of damaged concrete. The entire section was demolished and rebuilt with new reinforced concrete, one half of the channel at a time (so that the exposed channel could be protected from any water in the arroyo). The final water protection berm, which has since been removed, can still be seen in the second photo.
Embudito Channel
In December 2025, Compass repaired two sections of the Embudito channel: at Menaul Boulevard NE and at Moon Street NE. At both locations, existing concrete was removed and new concrete and rebar installed.
Embudo Channel
Compass removed three of four panels downstream of the CBCs at Jefferson St.
Embudo Channel
Compass placing a high strength flow fill to protect the opened repair from anticipated storm event.
Embudo Channel
Compass Engineering completed all four concrete apron panel replacements downstream for the Jefferson St. CBCs on the Embudo Channel.
Borrega Channel
Compass preparing for concrete placement at first of two new channel rundowns to minimize erosions to the Borrega Channel from adjacent private property.
Borrega Channel
Compass completed both concrete rundowns to capture adjacent private property runoff and direct it into the Borrega Channel, minimizing erosions and undercutting.
South Diversion Channel
Removal of portion of existing edge of shotcrete slope protection with voids and erosions underneath.
South Diversion Channel
Repaired section of shotcrete with cutoff wall and compaction. Repair project included installation of new pill box manhole, regrading of area between AMAFCA maintenance road and the slope protection, installation of new equestrian gate and improvements to convey smaller surface flow from roadway to the South Diversion Channel.
Ladera Channel
Repair on the maintenance road at the corner of Parkwest Dr. NW and Windward Dr. NW. to fix erosions and voids underneath. Adjacent channel was also affected, and portion of the channel was also removed and replaced.
Ladera Channel
Two additional channel repairs were performed on the Ladera Channel downstream of Parkwest Dr. NW.
North Branch Piedras Marcadas
Repair to headwall and channel that had settled and separated from one another.
North Branch Piedras Marcadas
Repair to channel downstream of Ventana Ranch Rd.
North Branch Piedras Marcadas
Same repair downstream of Ventana Ranch Rd, concrete channel section has been removed, rebar has been installed and Compass’ water protection pipe and berm held back nuisance water that had entered the channel.
[Updated 2/25/2026]