Learn about our extensive range of level measurement meters

27 October 2025

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Over many years, Solinst has put a lot of time and effort into the development of their range of Water Level Meters. This is recognised in the durability, accuracy and the wide range of options that are currently available for different needs. No doubt, most people will be familiar with the bright red 101 Water Level Meter. This always seems to attract attention at trade shows and other public events.

But how familiar are you with the other water level meters in the range that may not attract so much attention but are equally effective in different scenarios? Here is a snapshot.

 

 

As you can see, Solinst covers a wide range of applications around water level monitoring. Take one example, the 101D Drawdown Meter. Drawdown is a change in groundwater level due to an applied stress, caused by events such as:

• Pumping from a well
• Pumping from a neighbouring well
• Intensive water taking from local area
• Seasonal declines as recharge rates lower

The Solinst Model 101D Water Level DrawDown Meter measures depth to water and detects falling head levels (drawdown). The 101D provides a manual measurement method when only periodic water level and drawdown measurements are required. One simple toggle makes it easy to switch between the two functions. In Drawdown mode, the 101D can ensure drawdown levels remain constant, as the buzzer and light sound when the probe is out of water.

A typical application of the drawdown test is in an aquifer characterization test. This is a controlled field test performed on one or more monitoring wells. Each type of aquifer test puts a different stress on the aquifer system and the resulting effects are observed and used to estimate hydraulic properties. Different tests are more suited to certain aquifer types, i.e. confined, unconfined, leaky, artesian, etc.

In general, water levels, more importantly; drawdown levels are monitored during aquifer characterization tests, such as pumping, slug, and constant-head tests. These tests provide information to determine fundamental aquifer characteristics including hydraulic conductivity, transmissivity, and storativity.

Make sure to call the HydroTerra team today, (03) 8683 0091.  We are happy to discuss your specific application in more detail.