# Monitor a water tank remotely (https://logable.app/docs/guides/equipment/monitor-a-water-tank-remotely)
Put water tank level on a live dashboard, and alert before a tank runs dry, overflows, or drains faster than it should.
A water tank in Logable stores one reading: level, as a percentage of full. This guide covers the six steps from an empty account to an alert on a phone.
## 1. Add the tank as a device [#1-add-the-tank-as-a-device]
Open **Devices**, select **Add Device**, and pick the **Water tank** type. Name it after the asset, such as "Dust Suppression Tank".
The configuration is short:
* **Capacity**, the volume the tank holds when full.
* **Capacity unit**, litres or kilolitres.
Level itself is a percentage, so the tank presets need no threshold of their own.
## 2. Copy the credentials [#2-copy-the-credentials]
Step 4 shows the **Device ID** and the **Device Token**, once. Copy both into the gateway's MQTT client, or select **Download Credentials**.
## 3. Send the level [#3-send-the-level]
A water tank sends one metric, `level`, as a percentage.
```json
{
"timestamp": "2026-09-12T08:30:00.000Z",
"status": "online",
"data": { "level": 62 }
}
```
Send a reading every minute. A tank moves slowly, and a minute is fast enough for the draining preset to see an hour of change.
An ultrasonic or a submersible pressure sensor gives a distance or a head, not a percentage. Convert it to a percentage of full **before** the reading reaches Logable, at the sensor's transmitter or in the gateway. That keeps one number on the platform, and every tank preset then reads the same thing.
## 4. Put it on a dashboard [#4-put-it-on-a-dashboard]
Open **Dashboards**, select **Create dashboard**, then **Create from template**, and choose **Tank**. It lays out the level widget and the history together.
## 5. Add the alerts [#5-add-the-alerts]
Open the tank's **Triggers** tab and select **Browse presets**.
| Preset | Fires at | What you do |
| --------------------------- | ---------------------------------------------------------------------------------- | --------------------------------------- |
| Running low | 20 percent full | Refill, or switch the source |
| Nearly full | 90 percent full | Stop the inflow before it overflows |
| Draining faster than normal | A fall of 15 percent within an hour | Check for a burst line or an open valve |
| Not reporting | Five minutes of silence, or three times the reporting interval when that is longer | Check the gateway and the power |
> **What the alert says**
The push banner reads the device name and the preset's own sentence. A tank under a fifth reads "Dust Suppression Tank running low". A tank passing 90 percent reads "Dust Suppression Tank nearly full".
If a preset does not fit, select **Create Trigger** on the same tab instead. Set the metric, the operator, the threshold, and a recovery condition that clears the alert when the reading passes back over it.
## 6. Check it arrived [#6-check-it-arrived]
Open the tank's **Connection** tab and read the device log. A level sent as a string, a wrong topic or an expired token each show as a row with the reason and the fix.
## Read next [#read-next]
* [Water tank monitoring](/solutions/water-tank-monitoring), the whole picture.
* [Water tank device type reference](/docs/reference/device-types/water-tank), every metric and configuration field.
* [Monitor a pump remotely](/docs/guides/equipment/monitor-a-pump-remotely), the pump at the other end of the pipe.