HOBO U20 Water Level Data Loggers
Starting at $495.00

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  • Pressure / Water Level:
    • 0 to 30psia (0 to 207kPa) operating range
    • Factory Calibrated Range:
    • 10 to 30psia (69 to 207kPa)
    • 0 to 30ft (0 to 9m) of water depth (at sea level)
    • 45psia (310kPa) or 60ft (18m) depth
    • ±0.3% FS pressure accuracy
    • Lightning protection
  • Temperature:
    • -4 to 122°F (-20 to 50°C)
    • ±0.44°C from 0° to 50°C accuracy
    • 0.10°C at 25°C resolution
  • 64KB memory (approx. 21,700 samples)

The HOBO U20 water level data logger features high accuracy and ease-of-use, without cumbersome vent tubes or desiccants to maintain. This data logger is ideal for recording water levels and temperatures in shallow wells, streams, lakes and freshwater wetlands. For saltwater deployments, such as brackish wetlands and tidal areas, see HOBO U20 Water Level Titanium.

Required Components

These additional components are required for the operation of your product. We strongly advise you to purchase these components unless you already own them or own a suitable alternative.

HOBO U-DTW-1 Waterproof Shuttle Data Transporter
Compatible with all HOBO U-Series loggers with optic USB, waterproof up to 20m (66ft), requires HOBOware Pro software
HOBO BASE-U-4 Optic USB Base Station
Used to offload data from any HOBO data logger with an Optic USB interface, splash resistant
In Stock


HOBO HOBOware Pro Software
Plot or export data to spreadsheets, time saving tools to fast setup, readout and export, compatible with all HOBO data loggers
In Stock


Please consider these optional accessories.

HOBO COUPLER2-B Replacement Coupler
Replacement Coupler for U20 Water Level Loggers
HOBO HOUSING-U2X Protective Housing
The HOUSING-U2X Housing is for use in Underwater environments


This product can be used in the following applications:

Part Number Price Available
Show Configuration
Base Price
0 to 30ft (0 to 9m) depth; 0 to 30 psia (0 to 207 kPa) pressure
Stainless steel
$495.00 1
Show Configuration
Base Price
0 to 100ft (0 to 30m) depth; 0 to 58 psia (0 to 400 kPa) pressure
Stainless steel
$495.00 1

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 1-2 weeks". Click here to select options