Why do we need hydrographic & sediment studies?

HOA’s approach us and ask great questions. Below is a retention basin. Basins are designed to fill with water during storms and discharge the water effectively. Debris and sediment often accumulate overtime causing problems. This image shows sediment thickness found by sediment probes & sonar technology. It’s vital to know how much sediment and other material accumulates in retention basins to insure that it is functioning properly.

Retention Pond Management

A hydrographic and sediment study was recently conducted on a retention pond to provide a information to help with proper management. It’s important to know how much sediment and other material accumulates in retention basins to insure that it’s functioning properly. The image below shows the sediment thickness found by the sediment probes and sonar technology.

Dredge Progress Map

The Mapping Network provided an interim post-dredge survey for a Department of Natural Resources.  We provided a hydrographic survey and created a comparison model to calculate the amount of sediment removed from the area.

Hydrography and UAV/Drone Survey for Water Capacity Analysis

The Mapping Network conducted a hydrographic and topography survey for several trout ponds.   They utilized Odom Sonar,  Trimble RTK GPS, and Hypack to create the bathymetry.  For the topography they used Trimble RTK GPS for control and a UAV / Drone to collect the images that produced the orthographic image and topography contours.  All data was then input into ArcGIS for final processing.

Watershed approach to management

The Mapping Network just completed a lake survey for a property owner association.  The lake has experienced significant sediment in the coves and main river inlet over the years.  The Mapping Network sampled the sediment structure and mapped the sludge thickness to help the client in the dredging bid process.  Part of the report included understanding sources of sediment and how activity within the watershed will ultimately affect the lake.   Below is a map showing…

Lake Sediment – Volumetric Precision

The Mapping Network previously conducted a hydrographic survey to analyze the amount of sediment in a lake. After determining cost of sediment removal, the lake owner decided to dredge specific locations of sediment. The Mapping Network was able to perform volume calculations on the precise boundaries without any additional surveying. 

Lake Management – Dredging Sediment With an Excavation Plan

The Mapping Network performed a dredging excavation analysis for a lake association on multiple coves with sediment issues. The Mapping Network first conducted a pre-dredge survey along with sediment probes of the coves. With this data, they were able to create models estimating the volume of material needed to excavate to a specific water depth.

Dredge Excavation Planning in Lake Cove

The Mapping Network utilized several different technologies to create a 3D model of the land and water topography.  The Mapping Network used a combination of Hypack, RTK GPS, and Odom CV100 Sonar to create the bathymetry map.  For land topography The Mapping Network used RTK and UAV technology.  This model was used to calculate the amount of sediment that needed to be removed so lake managers could plan the upcoming lake dredging project. About The Mapping Network:  The…