Update on Two-Dimensional 2D Model for Steep Bank Creek Watershed

In our constant effort to prepare our community for the next high water event, the LID 19 board, along with several other boards, have joined forces to provide two-dimensional stormwater modeling to our region.

In 2014, Fort Bend County provided LIDAR data for the county. LIDAR stands for Light Detection and Ranging and is a technique that utilizes pulsed lasers to provide topographic information.


Pulsed lasers are sent from an aircraft to targeted ground positions get reflected back to equipment on that aircraft. A sensor on the plane measures the distance traveled by the laser. Millions of these pulses grouped with global positioning information, as well as other measurement systems, create scan angles. All of these millions of elevation points combine into what is called a point cloud. Every point in that cloud has three-dimensional spatial coordinates. The result of which is detailed topographic information about the ground.

LID 19, along with Fort Bend County Municipal Utility District #115, First Colony LID, and LID 15, joined forces to update the data to account for new developments since 2014 as well as to provide greater detail than what is available in the 2014 Fort Bend County LIDAR.


This initiative provides an additional level of detail for intense, less frequent rainfall events where the storm sewer collection system is overwhelmed. The new topographic information and various rainfall data fed into modeling software creates a 2D hydrological model of the Steep Bank Creek watershed and the surrounding regions. Once completed, the new, more accurate mapping can help us create high-end modeling of specific irregular rain events.

As meteorologists forecast certain cumulative rainfall events over a particular number of days, the modeling information can plan out the event projections before the storm reaches us, allowing operators on the ground to better prepare for a specific rain event. As we are aware, every high water event is unique, and information is critical to our success. This modeling will assist participating districts in evaluating potential future capital improvements and implementing appropriate operational changes to better prepare for the next river or weather event.

The cost of the 2D model is shared between all four parties. The 2D model is completed and will be released to participants as soon as the current conditions of the pandemic abate.

If you have any questions, you can email us from the website or post your questions on our Facebook page.

Stay Off the Levees

With the current Stay at Home order in place, residents have been actively walking through our community. While that is your choice, the LID 19 board of directors wanted to remind everyone that walking on the levees is not permitted.

Over the past few weeks, operators have seen more than just walkers as motorcycle and four-wheeler activity has been noted. These activities are not permitted and are inherently dangerous to the rider and the structural integrity of the levee.

Please do not go on the levee. Violators are considered trespassing and subject to penalties.

Flood Insurance Policy Extension

Earlier this week, the Federal Emergency Management Agency announced that they are extending the grace period to renew flood insurance. The extension is now 120 days; previously, it was 30 days. This change is directly due to the COVID-19 pandemic and the financial burden it has caused to many households. The extension applies to NFIP flood insurance policies scheduled to end between February 13 and June 15, 2020.

Additional information on this policy adjustment and any policyholder questions, please call the National Flood Insurance Program Center at 1-877-336-2627.