Chapter 13 introduces different types of spillways and gates. Hydraulic structures provide human-made control of flow depth and discharge. This chapter provides a broad overview of this complex topic with a few calculation examples for two main types of structures: spillways in Section 13.1 and gates in Section 13.2.

Samsu-iluna’s suppression of the Great Rebellion did not cause long-term harm to Babylonia. The succession of kings remained stable, defeated cities were not totally destroyed despite the rhetoric of victory. Southern cities adopted organic writing materials, so their activities are unknown to us. An archive that began in the reign of Hammurabi’s father continued to the end of this dynasty. Samsu-iluna’s huge project to divert floodwater from the Euphrates to protect Babylon was extended after the rebellion. Edicts for debt remission and to regulate trade continued to be issued. The use of Kassite and Elamite militias to garrison forts, Kish as a military base for Babylon, and a campaign to the north of Assyria, indicate organization and strength when the Assyrian trading colonies in Anatolia came to an end. Subsequent kings in Babylon won their own fame: Abi-eshuh for his literary works, Ammi-ditana for military achievements, Ammi-saduqa for being acknowledged as a god in Syria and Anatolia, for beating back rebels in the Sealand, for creating wonderful statues, and for recording astronomical observations. The last king of the dynasty enjoyed a long reign but came under pressure from the Hittites and Sealanders.