Case Studies

Case Study: Closing the Gates - Monitoring and Ingenuity Help Lousiana Communities Battle Storms

Flood Control Gate System The federal government saw the need for a flood control system through Terrebonne (Louisiana) and neighboring parishes, and in 1992, began a study to map out a project. Congressional acts in 2007 and 2014 resulted in authorizations for a $10.8 billion plan—dubbed the Morganza to the Gulf Hurricane Protection System after the town that marks its projected starting point— but the government never funded the projects. Closely monitoring stage and flow in real-time with instruments such as the SonTek-SL has allowed the levee district team to see the dramatic effects of landscape, wind, and tide on surges across the parish.

Case Study: Tidal Energy Feasibility in Larantuka Strait using SonTek Argonaut XR

The Republic of Indonesia is a vast archipelago with over 17.508 officially listed islands. The physical oceanographic characteristics in Indonesian waters lends itself to many opportunities for potential tidal current energy developments and feasibility studies, and continues to be undertaken to determine the commercial viability of constructing tidal power plants.

Case Study: Establishment of a Hydrographic Monitoring Site in Australia

SonTek-SL1500 Xylem Water Solutions were appointed by Local Government in Bundaberg to establish hydrographic monitoring site in Bundaberg Creek, just upstream of the confluence with the Burnett River. The monitoring objectives at the hydrographic monitoring site consisted of surface water level and flow measurement in real-time available through cloud based hydrological information management system (HIMS). Part of the initial site establishment consisted of performing detailed bathymetric survey of the Bundaberg Creek from upstream the Quay St Footbridge up to the confluence of the Burnett River for hydraulic analysis of the channel.

Case Study: Remote Bathmetric Survey in Kalgoorlie Mine Pits, Australia

Previously, volume surveys of impounded waters in pit lakes had been undertaken using Total Station positioning and soundings taken froma boat on the lake. This was a labour intensive process with up to four people required for the survey. In addition to this was the safety concerns associated with working on the water in boats. Kellie Carter, Senior Environmental Advisor, approached Xylem regarding any possible solutions to make this process more efficient.

Case Study: Summer On Ice: Stream Flow Data Improve Greenland Ice Melt Models

In 2015, a UCLA team of research scientists returned to southwestern Greenland to study meltwater runoff over three solid days of uninterrupted monitoring. If the their 2012 expedition provided snapshots of the movement of meltwater, the follow-up study that measured the same stream hourly for seven days straight delivered a movie of supraglacial stream flow-data proportions.

Case Study: Watching Waves - Busy Singapore Port Adds Sensor Technology to Ensure Safe Berthing

With the large volume of cargo vessels relying on the country’s ports, the Maritime and Port Authority of Singapore (MPA) has the challenging task of managing the safe and efficient operation of surrounding waterways. While the average consumer may not spend much time considering how goods arrive at their doorstep, behind the scenes agencies like the MPA are intimately involved with the logistics.

Discharge Monitoring in a Tidally Affected River with the SonTek-SL in Southern Malaysia

Malaysia Estuary In 2011 a series of gauging stations was established along the Johor River which measured river water level and velocity to gain a better understanding of the existing river flows. The Johor River is an important source of water for several water treatment plants. However during high tides and in dry seasons, a salt water wedge pushes upstream affecting water quality and thus water supply.

Paper: Discharge and Bathymetric Data Collection of Sinar Mas Forestry Plantantation Canals in Indonesia

Water management in the Sinar Mas Forestry plantations presents an immense amount of challenges. With over 2.6 million hectares of concession areas to manage, a comprehensive and dynamic water management plan is essential. For example, during the annual dry season, water table management is critical to prevent peat fires and for peatland forest conservation. However during the wet season, attention is switched to flood management at low elevation areas.

App Note: Clever Kayak Rig Navigates Tricky Bathmetry Challenge

It was a small lake, but a big challenge. Covering about 43 acres (17 ha), the lake is at the center of the Lake Forest subdivision in Daphne, Alabama and is completely surrounded by private property. Bret Webb, associate professor of Civil, Coastal and Environmental Engineering at the University of South Alabama, was starting a month-long study of sedimentation in the lake to help authorities evaluate flood storage capacity and potential restoration activities, but he was having trouble reaching the water. There was no public boat access, and thick vegetation prevented surveying elevations above the water level.
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