Adams Oaks Archives - Reduce Flooding

Perry Homes’ current contractors have excavated 3X more detention pond volume in ten weeks than the previous contractors did in virtually two years. During this past week, they finished excavating three ponds on the northern section of Woodridge Village. Together, they comprise 77% of the total detention volume for the whole site.

Excavation Done, but Finish Work Remains

That doesn’t mean they’re totally done with the ponds. Recent aerial photos show that they still have much finish work to do. That includes:

Shaping the sides
Creating backslope swales
Installing pipes to funnel water from the swales into the ponds and channels
Ensuring water can flow out of Adams Oaks in Porter on the west side of the subdivision into Taylor Gully as it previously did
Creating concrete “pilot channels” in the center of the ponds and larger channels
Planting grass along the sides of the slopes to reduce erosion
Installing outflow control in several places to hold back floodwaters
Building maintenance roads around the ponds

Elm Grove resident Jeff Miller, who monitors the progress of construction daily, says crews are already hard at work on many of those tasks.

Ponds NOT Expanded Beyond Initial Plans

Miller has compared the width and depth of ponds to the initial plans and verified that the ponds are being built to original specifications. Since the ponds were designed to meet pre-Atlas 14 rainfall requirements, that means the site will still hold 30-40% less runoff than needed to meet current regulations.

Still, surrounding residents in Porter, North Kingwood Forest and Elm Grove who flooded twice last year will find three large ponds on the northern section a welcome addition. They provide some measure of extra protection. Residents will have four times more upstream detention volume than they had during Imelda.

Racing Against Risk

With the peak of hurricane season now less than two months away, Perry Homes is in a race against risk. The company may regret the six months of virtual inactivity between the completion of pond S2 and the start of work on ponds N1, N2, and N3 in early April.

The faster pace of current construction puts pressure on Harris County and the City of Houston to complete an offer if an offer will be made. Elm Grove residents lobbied the City and County to purchase the property and build a regional flood detention facility. They center would also help protect downstream residents on the East Fork and Lake Houston.

However, at a Kingwood Town Hall Meeting in February, Mayor Pro Tem Dave Martin announced that the City would not participate in a deal. He said it was the County’s responsibility.

In April, the County announced that it would consider purchasing the land if the City contributed land in lieu of cash to cover half the purchase price.

Then in May, the County increased its demands. The County now wants the City to contribute land in lieu of cash to cover half the purchase AND construction costs for creating additional detention.

County and City Clamp Down on Communications

Since then, the County has clamped down on communications regarding this subject. Rumors suggest that all parties are still trying to make a deal happen. But the County has denied all FOIA requests and referred them to the Texas Attorney General for a ruling on their denials. That often happens when negotiations are in progress, according to a knowledgeable source.

What Happens Next?

At the contractor’s current rate of progress, it’s entirely possible that contractors will complete all work on detention ponds in July.

The City and County blew through a May 15 deadline that Perry put on the deal. But a “For Sale” sign at the Woodland Hills entrance remains on the property.

With approximately $14 million dollars invested in the property, with hurricane season here, with lawsuits pending, and knowing that the amount of detention is insufficient to hold a 100-year rain, Kathy Perry must be sweating bombshells.

Ms. Perry may be hoping for a City/County offer, but she can’t be counting on one. If she were, she could have sold the dirt coming out of those detention ponds. Instead, however, she’s building up land elsewhere on the site to keep her options open and develop the site if a deal falls through.

That dirt will have to be moved again at taxpayer expense if the county builds additional detention ponds.

Pictures of Site as of 6/19/2020

Here’s what the site looked like as of 6/19/2020.

*Looking NW from over Taylor Gully toward Pond N2, the largest on the property.*

*The connecting channel between N1 at the top of the frame and N2 along the western edge of the property has been excavated.* *Note the pilot channel that contractors have started* *in the distance.*

At Mace Street in Porter, contractors created a concrete face for the twin culverts on the upstream side, but not yet on the downstream side. Note the earthen dam holding water back while contractors complete the pilot channel running off the bottom of the frame.

*Above Mace Street, contractors are still putting in pipes between the channel and backslope swales.*

*The Webb street entrance to the site has been removed to connect N1 (out of frame on the top) with N2 (out of frame on the lower left).*

*Looking South at N3, which runs down the eastern edge of the property.*

*More pipes are being put in to channel water from backslope swales to the pond so water won’t erode the face of the pond. Not the rills already cut in the dirt.*

*Looking SE. The southern half of N3 where it connects with Taylor Gully in the upper right.*

*N3’s connection to Taylor Gully is now wide open. It’s not clear how this connection will be completed to release the water at a slow controlled rate.*

*The two culverts under the bridge over Taylor Gully should slow the water from N2 (upper right) and N1 (out of frame) down.*

Need for Grass if Deal Not Reached Quickly

Note how the grass on the southern side of the gully has all died. That raises a question. If Perry, the City and County do not complete a purchase agreement soon, will Perry plant grass on the northern section to slow runoff. Right now, it’s all hard-packed dirt.

*Most of northern section is hard packed dirt which increases runoff rate.*

Planting grass over an area this large would be a big investment and might get in the way of construction if Perry decides to develop the land. But it will reduce flood and legal risks.

Posted by Bob Rehak on 6/20/2020

726 Days after Hurricane Harvey and 275 after Imelda

Aerial photos taken Monday this week (5/11/2020) show that Perry Homes’ contractors appear to be partially blocking drainage that serves dozens of homes on the western side of Woodridge Village in Porter. With heavy rain expected this weekend, residents like Gretchen Dunlap Smith are nervous.

Homes Flooded Twice Last Year by Water that Could Not Get Out of Neighborhood

Many of those homes flooded twice last year, in May and September, just as homes in Elm Grove did.

*Looking south toward Kingwood along the western edge of Woodridge Village in Montgomery County.*

The issue with these homes, however, was that water could not get out of the neighborhood because of altered drainage.

Water drains to the east (left) into the drainage ditch along the perimeter of Woodridge, and then south toward the top of the photo to Taylor Gully.

*This enlargement, cropped from the photo above, shows how the perimeter road is pushing into the drainage ditch for homes in the older Adams Oaks subdivision to the right.*

Hovering over Flower Ridge in Porter and looking southeast. Note how workers have pushed past Perry’s own silt fence (upper right) that marked the old edge of the ditch and how dirt from construction is now collapsing into the ditch.

Heavy Rainfall Forecast for Saturday

After months of inactivity, it’s gratifying to see workers hustling again. But as the old saying goes, “Haste makes waste.” Forecasters are predicting widespread heavy rains this weekend. Predictions range from 2 to 4 inches, with pockets up to 6 inches.

Jeff Lindner, Harris County meteorologist said this afternoon, “Expect a line or complex of slow-moving thunderstorms to move across SE TX Saturday starting out west in the morning and spreading across the area throughout the day. There will be a low severe threat with this activity, but the main threat will be heavy rainfall.

As of Thursday, NOAA and the National Weather Service predict heavy rains and possible flash flooding across all of SE Texas.

That gives contractors one day, Friday, to clean out that ditch to avoid another possible flood and more possible lawsuits.

Posted by Bob Rehak on 5/14/2020

989 Days since Hurricane Harvey and 238 since Imelda

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Tag Archive for: Adams Oaks

Perry Contractors Now Focusing on Finish Work for Detention Ponds