

A pond monk (also called a "drain tower") is a hydraulic structure used to control the water level and drain water from a pond in a regulated manner. It is essential for the management of fish ponds, agricultural ponds, or ornamental bodies of water.
Description:
Structure: The monk is usually a vertical masonry or concrete structure, located near the pond embankment.
Operation: It is connected to a drain pipe (also called an "outlet culvert") that passes through the embankment. Water enters the monk through slots or removable wooden boards ("stop logs") that can be added or removed to adjust the water level.
Drainage: By gradually removing the boards, the pond water level is lowered to partially or completely empty the pond, for example during harvesting or maintenance.
Benefits:
Allows precise water level control.
Facilitates drainage without damaging the embankment.
Useful for fish harvesting, maintenance, or pond regeneration.
Find this product on page 356 of our Aquaculture France catalog.
Pond drainage and water‐level regulation system using wooden boards, allowing the evacuation of different water layers or simple overflow spillway. Manufactured in reinforced concrete with parallel grooves for two rows of boards.
Type | I | II | III | IV | V | |
Nom | MONK I | MONK II | MONK III | MONK IV | MONK V | |
Lenght - Width (mm) | 450-450 | 600-550 | 700-650 | 900-750 | 1250-920 | |
outlet | max. Ø200 mm | max. Ø300 mm | max. Ø400 mm | max. Ø500 mm | max. Ø800 mm | |
Modèle | ||||||
1 | Height | 100 cm | 100 cm | 100 cm | 100 cm | 100 cm |
2 | Height | 125 cm | 125 cm | 125 cm | 125 cm | 125 cm |
3 | Height | 150 cm | 150 cm | 150 cm | 150 cm | 150 cm |
4 | Height | 175 cm | 175 cm | 175 cm | 175 cm | 175 cm |
5 | Height | 200 cm | 200 cm | 200 cm | 200 cm | 200 cm |
6 | Height | - | 225 cm | 225 cm | 225 cm | 225 cm |
7 | Height | - | 250 cm | 250 cm | 250 cm | 250 cm |
8 | Height | - | 275 cm | 275 cm | 275 cm | 275 cm |
9 | Height | - | 300 cm | 300 cm | 300 cm | 300 cm |
ACCESSOIRES | For all models | |||||
10 | Wood boards spruce | |||||
11 | Wood boards oak | |||||
12 | Wood boards spruce with hook | |||||
13 | Wood boards oak with hook | |||||
14 | Grid 5 mm | |||||
15 | Grid 11 mm | |||||
16 | Wire mesh cover with lock | |||||
17 | Lid with hook |