diff --git a/src/controllers/tanksController.js b/src/controllers/tanksController.js
index c498f76b..9387002d 100644
--- a/src/controllers/tanksController.js
+++ b/src/controllers/tanksController.js
@@ -767,7 +767,8 @@ exports.consumption = async (req, reply) => {
       const tankname = tank.tankName
       const consumption = (waterlevel_at_midnight+total_water_added_from_midnight)-waterlevel
      
-        const newWaterLevel = Math.floor(consumption);
+        const newWaterLevel1 = Math.floor(consumption);
+        const newWaterLevel=Math.abs(newWaterLevel1)
         tankData.push({ tankname, waterLevel: newWaterLevel });