Choose, Deploy and Manage Your Setup

Water Monitoring Best Practices

Reliable water data starts before you deploy. The logger you choose, how you configure it, and how you mount it all affect the quality of what you collect.

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Jump to the section you need:
Identify your application
Match your measurements to a logger
Choose how you access your data
Deployment best practices
Software
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Choosing the right logger starts with three questions:

What are you monitoring,What do you need to measure, and how will you access the data? The three steps below are a practical way to think through what your application actually needs.

Step 1: Identify your application and the measurements it requires

If you are monitoring…	Key measurements needed
River or stream water quality	Temperature, conductivity, DO, depth
Groundwater or bore	Water level, temperature
Stormwater or flood risk	Water level
Wetland or estuary health	Temperature, salinity, DO
Aquaculture water quality	Temperature, DO, conductivity
Dam or reservoir management	Water level

Step 2: Match your measurements to a logger

Some applications require more than one sensor or logger. Confirm your full parameter list before selecting.

Measurement	Why it matters	Logger
Water Temperature	Core parameter for most aquatic monitoring programs	View water temperature loggers
Water Level	Flood monitoring, groundwater, dam management	Shop our water level loggers
Conductivity / Salinity	Estuarine health, aquaculture, tidal influence	View the U24 logger for salt water View the U24 logger for fresh water
Dissolved Oxygen (DO)	Aquatic ecosystem health, compliance	View HOBO’s U26 Data Logger
pH	Water quality assessment, ecological research	Learn more about the MX2501 pH & temp data logger
Underwater PAR (light)	Aquatic plant research, reef and restoration monitoring	Shop the MX2502

The HOBO MX800 series uses interchangeable sensors, so one logger body can be configured for conductivity/temperature, CTD, or dissolved oxygen depending on the sensor attached. Two sensors can be connected to a single logger.

Step 3: Choose how you access your data

Once you know what you need to measure, confirm how you need to retrieve it. This determines your connectivity type.

	USB	Bluetooth	Cellular
How data is retrieved	Physical connection via cable and computer	Via smartphone app within Bluetooth range	Automatically to the cloud
Site visits required	Yes	Yes	No
Real-time access	No	No	Yes
Alerts and notifications	No	No	Yes
Best suited to	Accessible sites, low-frequency monitoring, research	Regular site visits, field campaigns, water quality programs	Remote locations, flood monitoring, unattended long-term deployments
Typical applications	Short-term surveys, research programs	River and estuary monitoring, aquaculture	Dam management, groundwater networks, stormwater

Bluetooth simplifies data collection during site visits but does not remove the need for them. If your site is remote or you need alerts when levels exceed a threshold, a cellular station is the right choice.

Deployment best practices

Getting the setup right in the field has a direct effect on data quality. These are the things most likely to cause problems if overlooked.

Sensor orientation: Mount sensors vertically where possible. Horizontal or angled placement can allow air bubbles to form on the sensor face, producing readings that are out of range.
Water flow around the sensor: Sensors measuring conductivity, pH, or dissolved oxygen need adequate water movement past the sensor head. A protective housing with flow-through holes addresses both protection and flow in one step.
Physical protection: Loggers deployed in streams, rivers, or tidal zones are exposed to debris, current, and wildlife. Use a protective housing or PVC guard and secure the logger to a fixed anchor point. Record the GPS location or use a visible marker so you can retrieve it reliably.
Distance from metal: Keep sensors at least 25mm from any metal mounting hardware to avoid interference with readings.
Well and bore deployments: For 50mm well pipe installations, use a matched well cap with strain relief to protect the cable entry point and keep the logger positioned correctly at depth.
Calibration before deployment: Water quality sensors measuring DO, conductivity, and pH require calibration before deployment and periodically throughout the monitoring program. Use HOBOware Pro for guided calibration procedures.

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Software

Standalone and Bluetooth loggers: HOBOware and HOBOconnect

USB loggers use HOBOware software (Windows/Mac). Bluetooth loggers use the HOBOconnect app, available free on iOS, Android, and Windows. Both allow you to configure the logger, set logging intervals, download data, and export to CSV or XLS for further analysis. HOBOware Pro is required for calibration of water quality sensors.

Remote stations: LI-COR Cloud

Remote monitoring stations send data to the LI-COR Cloud platform on a set interval. From there you can build dashboards, set threshold alerts, assign user roles, export data, and integrate with third-party platforms via API. Data is accessible from anywhere with an internet connection.

Set your logging interval based on what the application actually requires. A one-second interval fills memory in hours. A one-hour interval gives you years of data.