Mark A. MacDonnell | KnowJudges

## Judicial assignments
[Colorado Water Court, Division 2](/kyj/court/co/colorado-water-court-division-2)Additional Water JudgeAdditional water judge designated to assist the principal judge; not the principal resident assignment. Listed as an additional or backup judge, not a primary resident judge.
Source checked October 15, 2026. [Roster source](https://www.coloradojudicial.gov/sites/default/files/2026-01/Division%20Water%20Judge%20Appt%20Order%202026.pdf)
These published assignments do not certify a complete bench.

## Biography

### Professional career

### Education

### Additional information