Rip Rap
The Lake Lanier Association spearheads the only initiative to save and protect the islands. The islands that dot the middle of Lanier are wonderful, irreplaceable assets. They provide opportunities for wildlife habitat, beaches and coves for recreation, fishing spots and general enjoyment on Lake Lanier. As more and more of the shoreline erodes and falls into the lake, these areas between the islands become shallower and less usable for safe recreation. There are some areas on the Lake where the entire island has disappeared as a result of constant erosion. The loss of these islands is not only a loss for recreation but also for storage capacity as the sediment added to the lake reduces the storage capacity for drinking water storage.
To date, three phases of rip rap projects have been successfully completed. In total 28 islands and three miles of shoreline have been protected since the initiative’s inception in 2014. The most recent phase was completed in Fall 2025 and dubbed, Project Armor. This effort was a year-long project protecting 16 different vulnerable shoreline areas from Gwinnett to North Hall and totaled 8,000 tons of stone. To put that in perspective, that is around 500 large dump trucks worth of material that would fill an entire football field with two and half feet of stone.
A prior rip rap installation was completed in May 2020, the association’s largest rip rap installation effort to date. During that phase, rip rap stone was installed across 6,100 linear feet of shoreline, or just over a mile. This project protected three islands near the Old Federal Park campground and four located in the Three Sisters Islands chain. 9,600 tons or 19,200,000 pounds of stone was used to armor these seven islands.
Protecting the shoreline of Lake Lanier is a high priority of LLA. Thanks to the support of all LLA members, we’re able to continue monitoring for future erosion protection projects to provide a clean, full and safe Lake Lanier for all to enjoy.
Project Armor Update
The Completion of 1 Mile of Rip Rap
Article written by Skip Short, LLA Board Member and Project Armor Coordinator, for the Fall 2025 Newsletter.
I trust you had a great summer and were able to spend a lot of time on the lake. During that time, you may have noticed the large white LLA sign at certain island locations around the lake. This sign designated the island where Project Armor was going on during that time frame. Upon the completion of rip rap at that location, the operation and the sign were moved to the next location. We are excited to report this was done 16 times over the course of 2024 & 2025 equating to a mile of shoreline protected by Project Armor! This brings LLA’s total shoreline protection efforts to 3 miles thus far.
Project Armor’s ambitious effort would not have happened without our key partners which included Hall County, Forsyth County, Gwinnett County, US Army Corps of Engineers, Martin Marietta, Simpson Trucking and Marine Specialties. They made this endeavor possible, and we all worked in concert like a well-oiled machine. It was a testament to everyone’s commitment to Lake Lanier. Project Armor provided rip rap to 16 areas with over 8,000 tons of stone. To put that in perspective, that is around 500 large dump trucks worth of material that would fill an entire football field with two and half feet of stone.
Many selected areas are islands where there is a very high concentration of boat traffic with noticeable erosion. One such high traffic area is the convergence of the Chattahoochee and Chestatee Rivers, also known by some as the tail of Beaver Island. Another location is a small island by Old Federal affectionately called by some as “Cuba”. Without the armoring of that island, it surely would have disappeared into the lake in the near future.
Protecting our shoreline provides stabilization which decreases erosion thus protecting water quality by keeping sediment out of the lake. The rip rap also assists in dissipating wave energy heading back in the opposite direction towards the lake. If you like to fish, rip rap areas are not bad places to search for fish either.
Lake Lanier gets over 12 million visitors a year, which means a lot of wave action, so our job is not done. We continue to monitor and identify areas that need protection. If you see an area of concern, please visit LLA’s website and go to the See Something, Say Something page to report it. Be on the lookout as there is a good chance Project Armor 2.0 could be on the horizon with your generous support.
We only have so much shoreline and we need to protect it. Protecting our shoreline is a high priority of LLA and we will continue efforts to provide a clean, full and safe Lake Lanier. Please continue your support of LLA, which will greatly assist us with our continued efforts in the future.
This shoreline protection project brought to you by members of the Lake Lanier Association and these fine partners:
WHY WE NEED RIP RAP
The islands that dot the landscape all over Lake Lanier contribute to the lake’s natural beauty. When the lake is at full pool, or 1,071 feet above sea level, there are approximately 160 visible islands. The islands offer a paradise for many lake visitors, with many favorites claimed early on popular summer weekend days.
With growing concern, LLA has recognized that many islands do not exist in their full glory anymore. Overuse and erosion have stripped them of their beauty, transforming them into hazardous areas. While shoreline erosion is a natural process, the increase in Lake Lanier’s boating activity has sped the erosion process, causing significant shoreline loss.
Not only does erosion cause a safety hazard for boaters, but erosion also leads to increased siltation. As silt builds up on the bottom of the lake, it effectively reduces the lake’s water storage capacity. Lake Lanier provides water for more than 4 million residents in North Georgia, so any reduction in the amount of water the lake can hold is a serious concern.
Installation of One Mile of Rip Rap Underway
Project Armor Program Update Extracted from the Kick-Off to Summer 2025 Newsletter Written by Skip Short, LLA Board Member and Project Armor Coordinator Project Armor is well underway […] Read More
Project Armor – The Early Stages of Installing One Mile of Rip Rap
By: Skip Short, LLA Board of Director I trust you had an enjoyable summer and were able to spend a lot of time on the lake. Shore Sweep was […] Read More
