- 2014 The pipeline was proposed in as a way of transporting oil from the Bakken oil fields to refineries via a pipeline that would stretch from North Dakota to Illinois. Energy Transfer Partners, the company building the pipeline, hopes to have it operational by the end of 2016.
- April 2016 A base for the protests, the Camp of the Sacred Stones, is established.
- July 2016 The US Army Corps Of Engineers permits the DAPL to cross streams and waterways, allowing construction to begin in earnest.
- July 2016 The Standing Rock Souix Tribe sues the Army Corps of Engineers over the pipeline. The case is still ongoing.
- August 2016-Present Protests block and slow construction of the pipeline.
- September 2016 A judge rules that construction on the pipeline may continue, denying an injunction as part of the ongoing legal proceedings. At the same time, three federal organizations--the Justice Department, the Army, and the Department of the Interior--moved to halt construction on an area of Army Corps land. The two different reactions, one allowing construction to move forward in some areas, and the other blocking an area of construction, illustrate the contentiousness of the project, even at a government level.
- December 2016 The Department of the Army announces that they will not grant an easement under Lake Oahe.
- January 2017 President Trump signs an executive memorandum asking the Army to review and approve the pipeline in an expedited manner.