New Mexico, ex rel. Reynolds, et al. v. Gutierrez, 440 Fed. Appx. 633 (10th Cir. 2011)

(case involves adjudication of water rights by state of New Mexico and court rejects challenge to water rights priority determination in the Nambe-Projoaque-Tesque river system; matter has been ongoing since 1966; deadline for priority filing missed by 6-months with no explanation; plaintiff argued denial of motion to vacate was appealable under the collateral order doctrine; doctrines three elements (conclusively determined disputed question, resolved important issue separate from merits of case, and effectively unreviewable on appeal from final judgment) must be shown; plaintiff did not meet the unreviewable requirement; timeliness of a priority objection is a procedural issue; issue can be resolved after final judgment in the case; court held collateral doctrine did not apply).