Geotech ET Portable Water Level Meters
Features
- Highly accurate Polyethylene coated steel well tape marked in engineering or metric increments
- Field serviceable 5/8" probe or optional 3/8" non-field replaceable probe
- Adjustable sensitivity to prevent false triggering
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Geotech ET Water Level Meter is a portable instrument used to accurately measure water levels in monitoring wells. The well tape is mounted on an extremely durable polypropylene storage reel with rugged aluminum frame. The polyethylene-coated engineer's tape is accurate to 1/100th of a foot.
Mechanics
The sensor consists of a stainless steel and FEP probe, and it relies on fluid conductivity to determine the presence of water. When the instrument contacts water, an audible signal and visible green light activate. The well tape also features adjustable sensitivity, which is used to prevent false triggering.
In The News
CrowdHydrology sources water level data from public's text messages
Chris Lowry’s idea was simple: set up staff gauges on local streams and leave a sign requesting passersby read the water level and text the data to a phone number. Data from text messages would be recorded and then posted to a website for public use. 
 It was the beginning of CrowdHydrology, a crowdsourcing project that recently gained U.S. Geological Survey support for expansion into several Midwest states. Though it won’t generate as much data as official USGS stream gauges, the project will generate data points that supplement those lost from official gauges shut down following federal budget cuts. 
 Lowry, an assistant professor of geology at the University at Buffalo, set up eight pilot sites in New York in 2011 in an attempt to crowdsource water level data.
Read MoreFrom Pans to Buoys: Advancing Reservoir Evaporation Rate Monitoring in Texas
In warmer climates like Texas, high reservoir evaporation rates can lead to declines in water level and water availability during droughts, making monitoring essential in order to ensure water security during times of scarcity. 
 
According to the Texas Water Development Board (TWDB), evaporation rates in Texas were previously based on data collected from a sparse network of Class A evaporation stations, dating back to the 1960s. These pans were stationed near reservoirs and still remain a widely accepted standardized approach to measuring evaporation rates on land. 
 
Monthly pan-to-lake coefficients were developed in the 1980s to connect the data collected from the pans to known lake conditions, extrapolating evaporation rates of the lakes using the pan data.
Read MoreA Drop in the Ocean: Restoring London’s Tidal Thames
The United Kingdom has grappled with wastewater management problems for decades. Although sewage treatment in the 20th century allowed many rivers, including the tidal Thames, to have healthy fish populations, combined sewer overflows into rivers–most commonly during heavy rainfall–affected water quality and occasionally even killed fish. 
 
Problems reached a head in 2012 when multiple infractions of European urban wastewater treatment laws threatened costly fines, on top of the environmental cost of repeated sewage spills into British rivers. 
 
Fast forward to 2025, and after a decade of construction work, London’s Thames Tideway Tunnel , affectionately dubbed the “super sewer”, is now fully activated and ready for testing.
Read More