• Investigating transient processes
    •  effect of rainfall of varying duration on the discharge
    •  storage capacity of a soil
  • Investigating steady processes
    •  seepage flow
    •  effects of wells on the groundwater level over time
  • Flow behaviour of rivers, obstacles in the river bed, sediment transport in rivers.


  • Investigation of precipitation-discharge relationships, storage capacity of soils, seepage flows, groundwater flows and sediment transport.
  • Closed water circuit.
  • Inclinable stainless steel experiment tank contains 21 measuring connections to detect groundwater levels, transparent splash guard and screens for separating the chambers.
  • 2 wells with open seam tubes in the experiment tank.
  • Precipitation device with 8~11 nozzles, adjustable.
  • Precipitation time can be adjusted via timer.
  • Water supplies and drains can be selected individually.
  • Transparent measuring tank (flow) and force sensor (determining the amount of sediment).
  • 3 models for pillars: round, square, oval.
  • Instruments: tube manometers (groundwater), flow meter (2x at the supply) and measuring weir in the measuring tank (1x at the drain).

FM-1849-45 can be used to study seepage and groundwater flows after precipitation. Furthermore, sediment transport in courses of rivers is also presented in the context of flow obstacles. Variable precipitation density and areas and different groundwater supply and drain possibilities allow a wide variety of experiments.

FM-1849-45 contains a closed water circuit with storage tank and pump. The core element is a sand-filled, stainless steel experiment tank with inclination adjustment. To study precipitation, a precipitation device is available, which is equipped with a timer to define the times of precipitation. The precipitation device consists of 8~11 nozzles. Water can flow in (groundwater) or out (drainage) via two chambers on the side. To study the lowering of groundwater, two wells with open seam tubes are available. By means of a small weir in the in the supply and drain, a course of a river can be generated.

Different water levels can be generated. Water supply and water drain can be opened and closed, thus allowing a wide variety of experimental conditions. In addition, three different models make it possible to study the flow around obstacles and the resulting sediment transport in the river bed. At the bottom of the experiment tank there are measuring connections to detect groundwater levels, which are displayed on 21 tube manometers. Two flow meters with different measuring ranges indicate the supply to the experiment tank. A measuring tank at the drain contains a measuring weir for determining the water level and a force sensor for determining the amount of sediment. The measured values are indicated at the trainer.