PROBLEM TO BE SOLVED: To provide a field water management system in which past data of the field is continuously taken over even if a water faucet control device installed in the field is replaced with the previous year. SOLUTION: A water hydrant installed in a field, an actuator that is detachably attached to the water hydrant and operates the water hydrant, a water supply control unit that controls the actuator, and a communication unit that communicates with a field water management server. And a field water management server that remotely controls the faucet control device. The faucet control device is provided with unique ID information and a position information acquisition unit, and the communication unit is a position controller. A field water management system configured to transmit the position information and the ID information acquired by the information acquisition unit to the field water management server. [Selection diagram] Figure 2【課題】圃場に設置された給水栓制御装置が前年と入れ替わっても継続的にその圃場の過去のデータが引き継がれる圃場水管理システムを提供する。【解決手段】圃場に設置された給水栓と、給水栓に着脱自在に構成され、給水栓を作動させるアクチュエータと、アクチュエータを制御する給水制御部と、圃場水管理サーバと交信する通信部と、を有する給水栓制御装置と、給水栓制御装置を遠隔制御する圃場水管理サーバと、を備え、給水栓制御装置は固有のID情報が付されるとともに位置情報取得部を備え、通信部は位置情報取得部で取得した位置情報とID情報を圃場水管理サーバに送信するように構成されている圃場水管理システム。【選択図】図2