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Case Studies
Integrated
Systems
- Lake Oswego, Oregon – Storm Water
Runoff
For the City of Lake Oswego, Oregon, quantifying the effects of watershed
urbanization upon Oswego Lake – an important local fresh water
reservoir – is instrumental for proving the future success of
up-stream pollution prevention programs. Hach Environmental supplied
the instrumentation that allowed Lake Oswego to create two compact
and unobtrusive water quality monitoring stations that leave a small
footprint and have low impact to the surrounding natural environment.
In addition, the Hach Environmental instruments deliver data in a
repeatable, low-cost way that was necessary for the long-term success
of the monitoring program. Read more
- Harlan High School Monitors Local
Iowa Watersheds
It's no typical chemistry class at Harlan High School in Harlan, Iowa,
where a class project monitors two local watersheds, thanks to a grant
from the Iowa Department of Natural Resources and a Hach Environmental
solution incorporating both Hydrolab and OTT products. Read
more
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Water Quality Sondes
Hydrolab Series 5
- Hydrolab MS5 with Hach LDO Helps Notre Dame
Research Team Link Salmon to Healthy Forests
Professor Gary Lamberti, Associate Professor Jennifer Tank, and Research
Assistant Professor Dominic Chaloner from the University of Notre
Dame's Department of Biological Sciences had a research team monitoring
water quality this past summer in Alaska as part of a project to determine
how the management of the nation's forests affects salmon production,
and also how salmon affect the nation's forests. Read
more
- Hydrolab Series 5 with Hach LDO Helps
Louisiana Department of Environmental Quality Assess Post-Katrina
Situation
In the aftermath of hurricane Katrina, when the levies broke around
New Orleans, the Louisiana Department of Environmental Quality (LADEQ)
was pressed into service. The agency relied on its inventory of water
quality monitoring instruments to track where water was, and what
areas were contaminated. The department owns as many as 80 separate
Hydrolab water quality monitoring instruments between all of its divisions,
and they have typically been able to use Hydrolab instruments for
8 to 10 years. The instruments in the department's inventory include
Minisonde 4a and Series 5 instruments with Hach LDO. Read
more
DataSonde 4a
- OTT and Hydrolab Provide Integrated, Turnkey Solution for the River Tyne
In August 2003 Posford Haskoning, a leading Engineering Consultancy in the UK, contracted OTT
Hydrometry Ltd (OHL) to design, deploy, and manage a system of four water quality monitoring
buoys on the lower tidal reach of the River Tyne in northeast England. The system is based on
an integrated solution that combines the strength of products from Hydrolab and OTT to provide
a complete turnkey solution for the site.
Read more
- Protecting Drinking Water in Central Taiwan
When the Taiwan Environment Protection Agency needed to build two real-time, long-term monitoring
stations on the Sun Moon Reservoir, it looked to Hydrolab for the critical measurement instruments.
Read more
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Water Quality Sensors
Chlorophyll a
- Real-Time Data Helps Facility Combat Algae
During the severe drought of 2001 and 2002, the North Jersey District Water Supply Commission pumped
more than 32 billion gallons from the Passiac and Ramapo rivers and stored it in the Wanaque Reservoir.
While siphoning off the nutrient-rich river water ensured a steady water supply for the people of northern
New Jersey, it also increased the likelihood of a serious algae bloom that could make the water supply
unsafe. Read more
- Vermont Agency of Natural Resources uses Hydrolab Equipment with Turner Designs' Chorophyll a Sensor
Turner Designs has designed a Chlorophyll a sensor specifically for integration into the Hydrolab DataSonde.
This sensor is based on the CYCLOPS-7 technology, and offers the most accurate Chlorophyll a measurement
available on a multi-parameter instrument. Read more
Blue-Green Algae
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Water Level Sensors
Ground Water Level Sensor
- OTT Orpheus Mini and ITC Provide Remote
Access to Water Level Data Critical to Monitoring Levee Repairs
In late August of 2005, the storm surge from Hurricane Katrina damaged
two sections of the back levee near Braithwaite and Scarsdale, two
towns located Southeast of New Orleans, Louisiana. The substantial
damage to the Caernarvon outfall area and the Breton Sound estuary
prompted the Interagency Advisory Committee and the Caernarvon Technical
work group to discuss changes to the operational plan that would benefit
the affected area. The changes need to allow for discharges up to
7,500 cubic feet per second for 20 days during a portion of the year.
Read more
Radar Level Sensor
- U.S. Geological Survey Uses OTT Kalesto
Radar Level Sensor
The U.S. Geological Survey (USGS) in South Carolina has worked with
products from Hach Environmental for many years. Currently, the USGS
uses the OTT Kalesto radar level sensor – a non-contact method
of measuring water levels – on medium to large rivers throughout
the state. Read more
Bubbler
- Using the OTT Nimbus in the Potomac River
The ICPRB recently embarked on a program to monitor the water level using automated sensors and real-time
modem communication. They chose the OTT Nimbus bubbler sensor with Hydras 3 software to accomplish this task.
Read more
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Precipitation Sensors
Precipitation Gauge
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