Documents

Five-Year Probabilistic Projections of future conditions in the Colorado River system currently extend through 2027. They are typically updated every January, April, and August, while probabilistic results for the 2-year period are updated every month. The 5-Year Probabilistic Projections are generated using the Colorado River Mid-Term Modeling System (CRMMS) in Ensemble Mode.

SWCA and TNF have completed reviews and analysis to determine whether reinitiation of Section 7 consultation under the ESA is warranted, and this technical memorandum outlines the various changes that could potentially warrant reinitiation of Section 7 consultation with the USFWS.

NatureServe is the definitive source for information on rare and endangered species and ecosystems in the Americas. This online guide provides information on the 100,000 species and ecosystems that we track.

This reclamation plan has been prepared for the pipeline route as required by Forest Service regulation 36 Code of Federal Regulations (CFR) 251.56 and to establish the basis for the reclamation cost estimate and financial assurance for the Special Use Authorization.

The purpose of this memorandum is to screen the Copper Creek Project for inclusion in the cumulative effects analysis and assess any cumulative effects with the Resolution Copper Project.

This catalog has been prepared to summarize available information for selected springs and seeps in the Upper Queen Creek and Devils Canyon watersheds. The springs and seeps included in this catalog were selected based on proximity to planned facilities as proposed by Resolution Copper for the Resolution mine project. Version 2.0.

This Record of Decision (ROD) constitutes the Department’s final decision after facilitating, analyzing, and considering public input over the past two and one-half years, during which the ongoing drought continued to focus nationwide attention on the Basin.

This study uses simulation-based life cycle assessment (LCA) together with a commercial flowsheet simulation program to compare several copper smelting technologies against each other when producing metallic blister copper from sulfide copper ore.

The decision is to adjust the 2007 Interim Guidelines for Lower Basin shortages and coordinated operations of Lake Powell and Lake Mead as described under Section IX of this 2024 Near-term Colorado River Operations ROD.