Streamline-GEO - Bathymetric Survey and Water Quality Mapping System

Streamline-GEO^©
Bathymetric Survey and Water Quality Mapping System

Featured Products

Streamline-ENV Version 2.0 now available!
Powerful instrument & data management system designed to work with your YSI multi-parameter sonde, 650MDS handheld and GPS devices.

Improve sonde calibration & data quality

Calibration reports created automatically

Simplifies setup and configuration

Interactive data analysis and QA/QC

Export multiple files in one easy operation

Multiple export formats supported (Excel®)

Simplify deployments and data acquisition
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Sontek Argonaut-SL The Argonaut-SL family of Side-Looking Doppler current meters has been completely re-designed for 2007. The Argonaut-SL features sleek, lightweight, low-profile housings designed to simplify installation and minimize flow disturbance to improve performance in shallow water and smaller channels.
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Streamline-SBP Used on Research Vessels Worldwide
Streamline-SBP-SS is an integrated software system designed to enhance real time and post-processing capabilities of Bathy 2000/2000P series high resolution sub-bottom profilers manufactured by Syqwest.
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Sontek FlowTracker
Sontek continues to improve its handheld wading discharge instrument making the industry standard FlowTracker even better. The latest release includes new velocity methods, discharge computations, automated QA/QC and more.
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Streamline-GEO^© - Overview

Streamline-GEO is a hydrographic and water quality mapping system that interfaces with NMEA GPS devices, YSI sondes and Airmar SmartSensors to create a unique environmental survey system. Streamline-GEO makes it easy to perform bathymetry surveys, outfall mapping (temperature, wastewater), dye studies, vertical profiles and 3D mapping in reservoirs, rivers, lakes and coastal regions.

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Specifications

Low-cost, easy to use water quality and bathymetric mapping survey system

Simultaneously acquire water quality, hydrographic and GPS data

Add an Airmar Smart^TM Sensor transducer (235kHz, 0.5 to 100m)

Works with your YSI water quality sondes

Embedded GIS and charts for real time mapping and data visualization

QA/QC is performed automatically during data acquisition

Additional processing using QA/QC features ported from Streamline-ENV.

Customized display for vertical profiling, spatial XY surveying, spot sampling and unattended deployments

GPS position information used to geo-reference environmental data

Data is stored in standard & ESRI SHAPE format for use with ESRI GIS products (ArcInfo^TM, ArcGIS^TM).

Extremely adaptable, Streamline-GEO may be used on large ocean-going vessels or even personal watercraft.

Compatible with NMEA GPS devices (Differential, WAAS, RTK)

Interfaces with commercial survey-grade echo sounders providing NMEA 0183 output to survey in greater depths

Optional towbody (depressor wing) and tow cable available for sonde mounting

Application

Mapping Water Quality and Bathymetry in Kaper Bay with Streamline-GEO

Following the disastrous tsunami of 2004, Streamline GEO is playing a critical role in the hydrographic surveying and water quality mapping in coastal areas of Southern Thailand. Conducted by a field office supported by the United States Agency for International Development (USAID), the survey is part of the Post Tsunami Sustainable Coastal Program. The purpose of this program is to assist villages in recovery from the 2004 tsunami as well as implement disaster management plans in preparation for future emergencies. Because the topography of the coastline was so radically altered by the tidal wave, all survey data of the area taken prior to the event is erroneous, requiring new surveys to be conducted.

To illustrate Streamline-GEO's versatility, the application presented here details how a coastal tributary (5 mile survey path) was surveyed in a less than 3 hours!

A pole mount was constructed and attached to the kayak to hold the transducer, GPS and sonde (Figure 1). The operator followed a survey path that zigzagged from shore to shore as he made his way upstream and covered a linear distance of approximately 5 miles. Streamline-GEO automatically acquired data from the echo sounder, sonde and GPS and displayed the data, scaled by color, on the GIS map. The vessel location and survey track are also displayed on the GIS map. A status board shows the instantaneous water depth, geographic position, vessel speed and heading along with Quality Indicators for each parameter.

Following the survey, the data was viewed in the GIS to confirm that the automated QA/QC process removed spatial outliers. As a secondary QA/QC verification, the data sets were examined in Analyst to verify that invalid data had been properly flagged. The data sets were then exported directly to an Excel file using the Streamline's Batch Export Module and processed using a surface and contour analysis plotting application. the results of the survey are shown in the figures below.

Bathymetry data collected during the Kaper Bay survey is represented in the first two figures and water temperature in the last figure. In the first figure the data is shown as a color scaled contour map overlayed on a geo-referenced satellite image of the survey area. A 3-dimensional color-coded representation of the hydrography is shown in the second figure. The hydrographic data is used in flooding models to enhance disaster management and evacuation planning.

Water temperature data collected with the sonde is represented in the figure below as a color scaled contour map with the geo-referenced image in the background. Water temperatures are warmest water near the coastal area and decrease steadily moving upstream in the tributary. Additional analysis of environmental measurement collected with the 600XL sonde (salinity, pH and dissolved oxygen) were also performed by staff from the field office. Data from this survey is combined with data collected in coastal and offshore waters using larger motorized vessels.