Law, John is a historic earth dam located in Windsor, Colorado, completed in 1896 for irrigation purposes along the Slough river. With a height of 14 feet and a length of 500 feet, this dam has a storage capacity of 310 acre-feet and serves as a vital water resource for the surrounding area. Despite its age, Law, John is still in operation, regulated by the Colorado Department of Water Resources, and undergoes regular inspections to ensure its structural integrity.

The dam's spillway, with a width of 160 feet, is uncontrolled, and the hazard potential is rated as low. However, the condition assessment in June 2020 revealed that Law, John was in an unsatisfactory state, warranting further attention and maintenance. It is noteworthy that the risk assessment for this dam is moderate (3), indicating a need for proactive risk management measures to mitigate potential hazards and ensure the safety of the downstream community in case of emergencies.

Law, John's rich history, combined with its essential role in providing irrigation water to the region, makes it a significant landmark for water resource and climate enthusiasts. As efforts are made to address its current unsatisfactory condition and manage potential risks, this dam continues to stand as a testament to the importance of maintaining and safeguarding our water infrastructure for future generations.