Tag Archives: sediment removal

Lake Bathymetry in St. Louis, MO

Using a GPS Lake Map to Create Management Plan

Jim Darlington, President of Leisure Ponds, mapped a pond in the St. Louis area for a residential Home Owners Association.

The pond surveyed was approximately 2.7 acres and had shown warning signs of sedimentation.  GPS Lake mapping was conducted on site to reveal the true lake depths of the ponds.  In addition to the bathymetric survey, sedimentation depths were collected and a model of sedimentation levels was created to estimate the volume of sludge in the lake.  During the mapping process, the HOA found out that the middle of the lake had roughly 2 to 3 feet of sediment accumulation.  This information provided the baseline depth profile needed for long-term sedimentation monitoring and dredging plans.  The mapping techniques utilized in this project allows Leisure Ponds to accurately isolate areas of high sedimentation for removal and help lake managers budget accordingly.

Contour map of a pond for a Home Owners Association in St. Louis, MO

Contour map of a pond for a Home Owners Association in St. Louis, MO

Leisure Ponds specializes in improving the functional and aesthetic value of urban problem ponds.  For more information on Lake Mapping and Management in the St. Louis area please contact:

Jim Darlington

636-346-6228

www.leisureponds.com

Leisure Ponds

 

The Mapping Network is an industry leader in Hydrographic Surveys, Bathymetry, Geographic Information Systems Consulting, Data Conversion, and GPS Data Collection.  We specialize in terrain and sub-surface (bathymetry) GPS mapping.   If you are serious about maintaining  a high-quality golf course, lake or pond, be sure you have the ability to make the best decisions,  get your resource mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

phone:  (402) 241-8177

e-mail: info@themappingnetwork.com

website: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

The Mapping Network is proud to announce their firm has been chosen by Cabela’s, the World’s Foremost Outfitter, as a Landowner Services provider for Cabela’s Trophy Properties throughout the United States.  Visit us on the Cabela’s Trophy Properties website >> click here

The Mapping Network:  www.TheMappingNetwork.com

A Nationwide Network of GPS Mapping Professionals

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Sediment Mapping Saves POA Hundreds of Thousands of Dollars in Dredging Costs

by Trent Lewis (Pond Medics, Inc.)

We recently worked with Lakeside on Preston HOA, in Plano, on their dredging project. The lakes in the community were approaching 18 years old and sediment had accumulated in the lakes to the extent islands had formed as if there were underwater volcanoes erupting and new land was emerging! Lakeside knew dredging was imminent, so they called several dredging contractors and asked them to submit quotes to perform the work. What they received from the contractors was a multitude of different opinions on what the lake bottom looked like and what needed to be dredged. As a result, they had many different quotes to choose from. But, what was the right choice? Our work began when the lakes and landscape committee chairman called us for help.

Mapping the lakes was the best option for fully understanding the severity of the sediment issues.  Once the maps were complete, a meeting was organized to review the maps and determine the areas the HOA deemed most important to dredge. This would help focus the dredging efforts and help reduce overall dredging expenses. Using the data we collected to make the bathymetric map, we were able to calculate the cubic yardage of sediment needed to be removed in the critical areas the HOA identified. Now, Lakeside on Preston had objective, hard data from which to ask for dredging quotes. It was no longer subjective to what the dredging company thought needed to be done. For the first time in the Lakeside dredging project, the community was at the helm. The critical dredging area data was tabulated, formatted into a visual exhibit, included in a new Request for Proposal (RFP) and present to the dredging contractors.

 The new dredging proposals were received two weeks later and reviewed. The first time Lakeside did this, they received quotes that varied in excess of 300% from one contractor to another. This time, after our new RFP was sent out, we received quotes that were within several thousand dollars of each other. Finally, Lakeside was able to compare “apples to apples” between dredging contractors. Why? All the contractors were all looking at, and bidding from, the same data.  Shortly thereafter, Lakeside on Preston chose a dredging contractor to perform the work and dredging began. PondMedics stayed on to assist the HOA with the project administration. The dredging contractor used the maps to help locate the areas they were contracted to dredge.

When all the lakes were completely dredged, we re‐mapped the lakes.  Because we were able to map the lakes prior to dredging, we could now provide Lakeside on Preston HOA a complete set of “before and after” maps. An otherwise unseen world, was now revealed to the community and everyone was able to see the underwater changes. Lakeside on Preston will present the completed project to the residents during the spring Annual Meeting, using the before/after maps to demonstrate to the residents how their money was used effectively in this dredging project and how the lake maps saved the POA hundreds of thousands of dollars.

Larry Hairston, a member of the board of directors and the lake committee chairperson for Lakeside on Preston HOA summarized it this way:

“When I first looked at the proposal the HOA had previously obtained it was in the neighborhood of $450,000 to perform the dredging. By going to multiple vendors with the information you [PondMedics, Inc.]supplied, the prices eventually came down and the final cost is in the neighborhood of $200,000. I am certain we saved well over $200,000 by competitively bidding the projects, but more specifically by determining the amount of silt to be removed. The other valuable service PondMedics performed was confirmation of satisfactory completion by the dredging company, using the mapping technology.”

A color-shaded sediment map created by The Mapping Network. Our automated sediment mapping system can precisely locate problems areas needing to be dredged. Knowing exactly where to remove sediment not only saves the client money, but protects the environment by limiting the extent of the dredging footprint.

The Mapping Network is an industry leader in Geographic Information Systems Consulting, Data Conversion, and GPS Data Collection.  We specialize in terrain and sub-surface (bathymetry) GPS mapping.   If you are serious about maintaining  a high-quality golf course, lake or pond, be sure you have the ability to make the best decisions,  get your resource mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

phone:  (402) 241-8177

e-mail: info@themappingnetwork.com

website: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

The Mapping Network is proud to announce their firm has been chosen by Cabela’s, the World’s Foremost Outfitter, as a Landowner Services provider for Cabela’s Trophy Properties throughout the United States.  Visit us on the Cabela’s Trophy Properties website >> click here

The Mapping Network:  www.TheMappingNetwork.com

What is the Best Time of the Year to Map Your Lake?

Right Now!  The Mapping Network maps lakes throughout the entire year but typically the best time to map a lake is from fall until spring, while the weeds are down.  Understanding exact acreage, depths, and chemistry of your lake are critical factors for making the best management decisions in 2012.  Armed with this knowledge you will be able to properly place structure, deliver appropriate stocking densities, select the correct fish species, apply the right amount of weed control, and of course gain a better idea where those bass may be hiding!   An accurate lake map provides the information needed to make the most of your aquatic resource.   The Mapping Network provides the highest quality and is the most affordable bathymetric mapping system on the market today.  If you are serious about maintaining  a high-quality lake or pond, be sure you have the ability to make the best decisions,  get your lake mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

phone:  (402) 241-8177

e-mail:  info@mappingnetwork.com

website: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

3D color-shaded depth map created by The Mapping Network shows extensive detail of the lake bottom.

About The Mapping Network:

The Mapping Network is an industry leader in Geographic Information Systems Consulting, Data Conversion, and GPS Data Collection.  We specialize in terrain and sub-surface (bathymetry) GPS mapping.   If you are serious about maintaining  a high-quality golf course, lake or pond, be sure you have the ability to make the best decisions,  get your resource mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

What is Being Left on the Bottom of Your Lake?

Most lakes and ponds are fed by rivers and creeks and water isn’t the only thing being carried into the lake.  Something unseen is slowly accumulating on your lake bottom – Sediment.   When flooding occurs, the increased river levels cause extremely high amounts of sediment to be deposited into your lake.  Sedimentation is one of the costliest problems facing lakes due to the difficulty of removal.  If you live on a lake that is fed by a creek or river, there is a high need to monitor and map out sediment accumulation.  Learn more about our Sediment Mapping here >> Sediment Mapping Detailed. 
Here at The Mapping Network, we specialize in accurately mapping bodies of water, calculating the water volume, collecting sediment depth samples at critical areas and monitoring the distribution of sediment over time.  We have a nationwide group of professionals specializing in all facets of lake management.   If you are serious about maintaining  a high-quality lake or pond, be sure you have the ability to make the best decisions,  get your lake mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

Locations of sediment depth points collected. Each cover where a creek entered the lake was surveyed for sedimentation. The results of this project will assist lake managers in creating dredging plans.

Map displaying sediment depths with color-shading to visualize the areas of high sedimentation.

The Mapping Network is an industry leader in Geographic Information Systems Consulting, Data Conversion, and GPS Data Collection.  We specialize in terrain and sub-surface (bathymetry) GPS mapping.   If you are serious about maintaining  a high-quality golf course, lake or pond, be sure you have the ability to make the best decisions,  get your resource mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.phone:  (402) 241-8177e-mail: info@themappingnetwork.comwebsite: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

Sediment Issues on Missouri River Marina

Most lakes and ponds are fed by rivers and creeks and water isn’t the only thing being carried into the lake.  Something unseen is slowly accumulating on your lake bottom – Sediment.   When flooding occurs, the increased river levels cause extremely high amounts of sediment to be deposited into your lake.  Sedimentation is one of the costliest problems facing lakes due to the difficulty of removal.

If you live on a lake that is fed by a creek or river, there is a high need to monitor and map out sediment accumulation.
The Mapping Network teamed up with a local engineering company to map a marina on the Missouri River.  The purpose of this project was to determine the amount of sedimentation in the marina.  The Army Corps of Engineers used this information to gather bids for dredging the marina.  The post-dredge report declared an accurate bathymetric and sedimentation survey was collected and all parties were very satisfied with the results.

Contour map with sediment thickness points of a marina on the Missouri River.

To learn more about our Sediment Mapping here >> Sediment Mapping Detailed

The Mapping Network is an industry leader in Geographic Information Systems Consulting, Data Conversion, and GPS Data Collection.  We specialize in terrain and sub-surface (bathymetry) GPS mapping.   If you are serious about maintaining  a high-quality golf course, lake or pond, be sure you have the ability to make the best decisions,  get your resource mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

phone:  (402) 241-8177

e-mail: info@themappingnetwork.com

website: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

Lake Dredging Due to Sediment Problems?

Save Significant Money on Dredging Projects with The Mapping Network!

The Mapping Network recently completed a mapping project for a large-scale home owners association in Arkansas.  The large lake had 21 coves and several homeowners were having difficulties accessing their dock due to sedimentation.  Here were some of the questions the HOA management team had:

– where is the highest sedimentation occurring?

– how much fluffy sediment (in cubic yards) is in each cove?

– if the lake is drawn down 5 ft, what would the shoreline look like?

– how much water (gallons and acre-ft) is in the lake?

– if we make each cove a minimum of 4 feet deep for boat access how much material do we need to remove?

– by undertaking this mapping process will it save us money in the end?

The overall goal of the lake mapping project was to survey each cove for future dredging along with the creation of an accurate map of the entire lake.  The lake had 21 coves and The Mapping Network collected water depths over the entire lake and fluffy sediment levels for all areas under 10 feet of water.

3D models were generated to show how much sediment had accumulated in each cove.  Contour maps were also made for each cove and given to the lake manager and engineer to review for dredging planning.  The Mapping Network then created cut-fill calculations and maps based on the specifications of the lake manager.  The HOA then used this information as part of the bid package given to dredging companies.  Presenting the precise plans took out the guess work and kept all the dredging contractors on task and it is projected to save the HOA an estimated $5,000-$12,000 per cove!  An incredible cost savings when compiled over 21 coves.

In the example maps below, The Mapping Network located the areas where the current depth was less than four feet, which was the dredging zone.  The mapping techniques utilized in this project helped the HOA accurately calculate and isolate areas of high sedimentation for removal and helped the property manager budget accordingly.

The bottom line – This powerful information allows for smart management and planning decisions and will serve as a baseline for future projects.  A great value!

A series of maps showing the seleceted area for dredging. The current lake bathymetry (top) and the post-dredge contours (middle) are shown in blue shading. A cut-fill model (bottom) shows areas of cut needed to reach the goal.
A series of maps showing the selected area for dredging.
The current lake bathymetry (top) and the post-dredge contours (middle)
are shown in blue shading. A cut-fill model (bottom) shows areas of cut
needed to reach the goal.

The Mapping Network provides the highest quality and is the most affordable bathymetric mapping system on the market today.  If you are serious about maintaining  a high-quality lake or pond, be sure you have the ability to make the best decisions,  get your lake mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

phone:  (402) 241-8177

e-mail: info@themappingnetwork.com

website: www.themappingnetwork.com

Check out The Mapping Network on Facebook for more examples and success stories!

What is Being Left on the Bottom of Your Lake?

Most lakes and ponds are fed by rivers and creeks and water isn’t the only thing being carried into the lake.  Something unseen is slowly accumulating on your lake bottom – Sediment.   When flooding occurs, the increased river levels cause extremely high amounts of sediment to be deposited into your lake.  Sedimentation is one of the costliest problems facing lakes due to the difficulty of removal.  If you live on a lake that is fed by a creek or river, there is a high need to monitor and map out sediment accumulation.  Learn more about our Sediment Mapping here >> Sediment Mapping Detailed

Here at The Mapping Network, we specialize in accurately mapping bodies of water, calculating the water volume, collecting sediment depth samples at critical areas and monitoring the distribution of sediment over time.  We have a nationwide group of professionals specializing in all facets of lake management.   If you are serious about maintaining  a high-quality lake or pond, be sure you have the ability to make the best decisions,  get your lake mapped by the professionals at The Mapping Network.   Give us a call or send an e-mail to find out more details.

Locations of sediment depth points collected. Each cover where a creek entered the lake was surveyed for sedimentation. The results of this project will assist lake managers in creating dredging plans.

Map displaying sediment depths with color-shading to visualize the areas of high sedimentation.

contact:  Steve Bartosh

phone:  (402) 241-8177

e-mail: info@themappingnetwork.com

website: www.themappingnetwork.com

A Nationwide Network of GPS Mapping Professionals