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Roman intervention forces (Caesar in Gaul) Infrastructure Tier 3

Perennial Irrigation

Basic irrigation systems were widespread in the ancient world because they were simple to maintain. Perennial irrigation was rarer, and required longer canal systems, a method of storage, and better maintenance to ensure that silt and salt build-up was kept in check. In Mesopotamia, the river system was able to supply water to the surrounding arable land in the dry season through a system of canals, closed off by dykes and sluice gates. Water was stored in reservoirs, either natural or man-made, and then lifted into the irrigation channels. While this was a labour-intensive task, the results of such toil were remarkable and hugely beneficial to harvests in the area.

Node Set Infrastructure Tier 3

research_points 900

cost_per_round 0

Effects

• +2 growth in all provinces per turn (all provinces)
• +25% wealth from farming (agriculture) (all regions)
• +2 growth in all provinces per turn (all provinces)

Requires
Requires Technologies	Advanced Construction Techniques

Enables
Enables Buildings	Olive Oil Storehouse Wine Press Granary Complex Terraced Vineyards Olive Oil Complex Latifundium