City surveys damage left by heavy rains

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The City of Arvada has started to release information about the damage sustained during the recent flooding that wreaked so much havoc on the state.

Communications Manager Wendy Forbes said the time frames for repairs and true dollar estimate are still not available. She added that this is an ever-changing landscape for the city as crews are out there trying to repair and get things back to normal.

In the area of parks and golf courses, around six bridges suffered severe damage to total loss: two bridges at the most western end of the trail north of Arvada-Blunn Reservoir were washed out, bridges at Mapleleaf Park, Ralston Cove Park, Apple Meadows Park and at the 8th hole at West Woods Golf Club were severely damaged.

Bridges are being assessed as waters so this number in expected to increase.

There was extensive damage along the soft surface trail system, and it will be a number of months before all repairs are completed.

Significant damage to all 109 bunkers at West Woods Golf Course also occurred, in many instances all of the sand completely washed out. Restoration work has already begun and it will take months to restore them.

Ralston Creek was hit particularly hard, according to the information.

Flood waters undermined the banks of the creek resulting in five trees lost at Memorial Park, at least three trees in Ralston Cove Park, three irrigation controllers (approximately $3,500 each) at West Woods were covered by flood waters, the bathroom on the 14th Hole at West Woods was full of three feet of water.

Much of the ditch bank along hole 17 was eroded away, leaving the cart path suspended above a new chasm.

All practice and game fields for turf sports were closed on Sept. 11 and were reopened on Sept. 18 to a full schedule.

When West Woods re-opened on Sept. 18 it was in a limited, 9-hole format and on Sept. 20 another nine holes opened. The available holes are all from the Silo and Sleeping Indian courses. The Cottonwood course suffered the most damaged.

The information estimates a revenue loss of $150,000 at the course, including the cancellation of the course’s largest grossing tournament.

All of the city’s construction projects were suspended by the flood.

Ralston Central Park lost much of the newly installed irrigation laterals.

In the public works department, damage to streets was and continues to be a major concern.

Quaker St. at Leyden Creek was repaired and reopened, while Indiana Street at W. 78 Avenue is still closed, with detour signage up. Repair of the water line began over the weekend of Sept. 21 and should be finished this week.

Leyden Road between the entrance to Leyden Rock and Highway 93 was closed due to landslides and debris. City crews made temporary repairs, and it is open to traffic. Additional needed repairs will occur over time.

Arvada staff is working with CODT on replacement of the drainage pipes under Indiana Street and street repairs. Realistically, it may be two weeks before Indiana Street can be reopened.

About 1,700 tons of rip rap material has been placed on slopes, helping to stabilize culverts around the city.

Crews removed debris from bridge abutments on Ralston Creek, Little Dry Creek and Leyden Creek, and they are currently working on the debris from foot bridges and trails throughout the park system.

The Croke Canal was breached, over-topped, and compromised at many locations.

Known breaches occurred at Leyden Creek, Van Bibber Creek, and Moon Gulch. Staff is in contact with the canal company. No time estimate has been given about those repairs.

Homes along Leyden Creek upstream and downstream of Alkire St. in unincorporated Jefferson County and inside the City of Arvada received damage. Staff is just beginning to look at possible solutions.

City facilities — particularly City Hall, City Hall Annex, the Arvada Center and Indiana Shops had some minor roof leaks, with little damage to the structures.

The sediment in both Arvada and Ralston Reservoirs is slowly settling out, according to information provided

The Ralston Water Treatment Plant (WTP) can now treat 15 million gallons per day (MGD); capacity continues to improve as the sediment drops out of the reservoir water. The Arvada WTP is on-line and can produce 6 MGD.

The city has a combined capacity of around 20 MGD. Customer water demand is presently at 10 MGD.

Residents will have noticed a taste in the water, the issue with the drinking water is slowly improving. The taste issue will likely linger until the end of the month.

The city has been dealing with several water pipeline problems, including at Quaker and Leyden Road, at the Arvada Reservoir and Indiana St., but more are repaired or nearly finished.

The city is dealing with some issues in the wastewater sewage area.

The Ralston collection and transmission pipeline surcharged in one area and several homes and office buildings were flooded through the sewer connections.

The surcharge ended on Saturday and the water has flowed back down the sewer services and out of the buildings.

The source of the surcharge water has been identified (manholes under water) and as a temporary measure the manholes have been sealed to prevent a re-occurrence.

A more permanent solution to this problem is being researched, according to the city.

Overall the storm water system functioned amazingly well, the report states.

Water captured by the Farmers and Croke canals were areas of high concern during the flooding event, and the city will be working with the canal companies about future migration projects.

Damage to the stream channels occurred along Ralston and Leyden Creeks and emergency repairs are under way and long-term solutions are being considered.

Visit www.arvada.org for more information.

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