Tiddas
Tiddas Dam is a strategic 106-meter embankment commissioned in 2022 in Khemisset Province on the Bouregreg River. With a capacity of 507 million m³, it secures the drinking water supply for the Kenitra-Rabat-Casablanca corridor, regulates Bouregreg floods, and irrigates 4,627 hectares, complementing Sidi Mohammed Ben Abdellah Dam.
Photo: SYGEO
106 m
Height
507
Capacity (Mm³)
91%
Fill Rate
2022
Built In
About This Dam
Tiddas Dam is a strategic 106-meter embankment located in Khemisset Province, about 70 km southwest of Rabat, on the Bouregreg River. Commissioned in 2022 after six years of construction by SGTM for an investment of 867 million Moroccan dirhams, it has a storage capacity of 507 million m³ and drains a watershed of 2,170 km². Tiddas — meaning 'group of hills' in Amazigh — plays three complementary roles: (1) securing the drinking water supply for the Kenitra-Rabat-Casablanca corridor home to more than 8 million people, complementing Sidi Mohammed Ben Abdellah Dam; (2) regulating Bouregreg floods to protect the downstream valley, absorbing peaks and progressively releasing water to SMBA; (3) irrigating 4,627 hectares of arboricultural perimeters at Béni Zoulit, Aït Zaghou, and Aït Boumska. Built under King Mohammed VI, it forms part of the dam acceleration policy that produced 60+ reservoirs in 20 years. Its normal retention level is 327 m above sea level and its highest waters level reaches 332.4 m, for a reservoir area of 15.57 km².
An emblematic dam of King Mohammed VI's water policy, Tiddas protects the Kenitra-Rabat-Casablanca corridor from water stress. By holding Bouregreg floodwaters and then releasing water to Sidi Mohammed Ben Abdellah Dam, it optimizes regional storage and prevents overflows like those of 2018. Its position upstream of SMBA makes it a key link in the Sebou-Bouregreg 'water highway'.
Historical Fill Rates
Key Specifications
- Location: Rabat-Salé-Kénitra · Nearest City: Tiflet
- River: Bouregreg · Basin: Bouregreg
- Type: Embankment Dam · Height: 106 m
- Capacity: 507 Mm³ · Built In: 2022
- Builder: SGTM
- Coordinates: 33.5500°N, 6.3500°W
Purpose
Water Supply
Supplies drinking water to cities
Irrigation
Provides water for agricultural irrigation
Flood Regulation
Regulates river flow during floods
Frequently Asked Questions
What is the capacity of Tiddas Dam?
Tiddas Dam has a total storage capacity of 507 million cubic meters (Mm³) and a height of 106 meters. It ranks among Morocco's strategic reservoirs and plays a key role in regional water security.
Where is Tiddas Dam located?
Tiddas Dam is located in the bouregreg river basin in Morocco. It is part of the national network of large dams managed by Morocco's hydraulic authorities.
When was Tiddas Dam built?
Tiddas Dam was commissioned in 2022. It forms part of Morocco's ongoing national dam-building program, which has expanded significantly since the 1960s.
What is the current water level at Tiddas Dam?
As of the latest update, Tiddas Dam holds 461.4 Mm³ out of a total capacity of 507 Mm³, representing a fill rate of 91%. Levels are updated regularly to track seasonal rainfall and water releases.
What is Tiddas Dam used for?
Tiddas Dam serves several purposes: supplying drinking water to nearby cities, irrigating agricultural land, regulating floods to protect downstream areas, and supporting regional water management.
Which river feeds Tiddas Dam?
Tiddas Dam is built on the Bouregreg River. The dam captures the river's flow to store water for drinking, irrigation, and flood control.
Current Level
FullCapacity
461
Mm³
Remaining
46
Mm³
Fill Rate
91%
Updated · July 2026
Geography
- Region
- Rabat-Salé-Kénitra
- Nearest City
- Tiflet· 39 km
- Coordinates
- 33.550, -6.350
Sidi Mohammed Ben Abdellah
Primary water source for Rabat, connected to the Sebou-Bouregreg Water Highway.
FullCapacity
974.8
Height
99m
Built In
1974
El Maleh
El Maleh Dam is a historic dam built during the Protectorate era on the Oued El Maleh near Mohammedia. It forms a 250-hectare reservoir and supplies the region with water for irrigation.
GoodCapacity
37.3
Height
18m
Built In
1931
Tamesna
Tamesna Dam is located in Settat Province in the Bouregreg and Chaouia basin. It contributes to agricultural irrigation and water supply for the Casablanca-Settat region.
FullCapacity
56.1
Height
42m
Built In
2008