Dawn of the Delta: Aegyptus zones, floods, irrigation and paths

Dawn of the Delta adds Aegyptus, a river-delta province with its own five tiers: Threshers, then either Potters and Chanters (Aegyptian path) or Scribes and Gymnasiarchs (Graeco-Roman path). Each island has three zones, and the river floods the Floodplains in a regular cycle, so where a farm stands decides how much it makes. The DLC can start a new game in Aegyptus or be added to an existing save.

Zones

Zone	Where	Used for
Farmland	Green strip along the coast; the only place for a harbour	Date Farm, Oat Farm and, later, wheat and barley
Floodplains	Next to the river	Mud, reeds, beads, wheat and barley; production gains in the harvest season
Arid Zone	Further inland	Residences and workshops; no farming without irrigation

Flood and harvest seasons

• Flooding season: every building in the Floodplains loses 75% productivity, and the whole province gets −2 Health and +2 Fire Safety.
• Harvest season, after the flood: every production building in the Floodplains makes 1 t more per cycle.

A Floodplain farm therefore runs at a quarter of its speed for one season and above its normal speed for the next. Keep a stock of Floodplain goods to cover the flood, or grow the same goods on Farmland as well.

Irrigation and Granary

• Basin and canals: build a Basin on the coast and canals inland. Land within 8 tiles of each side of a canal becomes Farmland. A Water Channel Sump on a canal, connected to a road, gives +1 Health and +3 Fire Safety in its range.
• Noria and aqueduct: Gymnasiarchs (Graeco-Roman tier 3) unlock a Noria that lifts river water into aqueducts, which water a circular area.
• Granary: +15% productivity and +1 Population for farms in its range, plus 100 t of storage for farm goods per Granary. Players on Steam found that the storage is one shared pool for all granaries. Storing more than the limit makes granaries overflow, which can attract rats; an infestation lowers Health on the island. Granary upgrades need research.
• One Steam thread reports that, on the normal consumption setting, a province can be run without canals; irrigation becomes necessary when Farmland runs out.

Tiers and paths

Tier	Aegyptian path	Graeco-Roman path
1	Threshers: Dates, Porridge, Wesekh Collars, Tunics; Market, Firepit	(same)
2	Potters: Stuffed Goose, Beer, Shentis, Kollurion, Apotropaic Talismans, Oil Lamps, Drinking Horns; Apothecary, Sanctuary	Scribes: Bread, Cheese, Sandals, Soap, Brooches, Scribing Sets, Olive Oil; Grammaticus, Sanctuary
3	Chanters: Kayk, Blue Lotus Tea, Kalasirises, Perfumed Oils, Cloaks, Sistrums, Fine Glass, Handmirrors; Rock Tomb, Observatory	Gymnasiarchs: Rare Meat Platters, Wine, Bird Tongues in Aspic, Necklaces, Milk of Poppea, Wigs, Ivory Caskets, Loungers; Baths, Library

Wheat becomes available with the second tier. Both tier 3 groups share the pyramid project (Renovated Pyramids) as a marvel need.

New chains

Good	Chain in Aegyptus
Wesekh Collars	Beadmaker (90 s) → Bead-Threader (90 s), 1 : 1
Apotropaic Talismans	Copper Mine + Sand Refinery → Bluehands (Aegyptian Blue) → Artisan Glazier with Mud
Scribing Sets	Reed Gatherer → Papyrus Maker (120 s); Mineral Quarry → Mineral Crusher (Pigments) → Scriptorium (120 s)
Sistrums	Copper and Tin Mines → Bronze Smelter; Beadmaker → Tympanist (120 s)
Stuffed Goose	Wild Goose Chaser + Wheat Farm → Farcer (120 s)
Kayk	Apiary + Donkey Mill (Flour) → Kaykery (90 s)

The production ratios page has the whole-building ratio of every Aegyptus chain.

New needs in Latium and Albion

Owning the DLC adds Aegyptus goods to residents of the other provinces: Dates, Kollurion and Scribing Sets for Equites; Kayk, Milk of Poppea, Ivory Caskets and Sistrums for Patricians; Rare Meat Platters and Perfumed Oils for Nobles; Kollurion and Apotropaic Talismans for Smiths; Blue Lotus Tea for Aldermen. Latium and Albion have no buildings for these goods, so they arrive by trade route from Aegyptus.

Deities

Aegyptus brings three patron deities: Sobek (food production and irrigation), Isis-Bastet (lavender, perfume and dates, lower consumption) and Thoth Trismegistus (glass, wine, tablets and scribing sets; income and prestige from knowledge). Isis-Bastet and Thoth Trismegistus are unlocked through research.