Water Resources

The documents listed below are Baseline Reports categorized topically as water resources.

This catalog has been prepared to summarize available information for selected springs and seeps in the Upper Queen Creek and Devils Canyon watersheds (UQC/DC). The springs and seeps included in this catalog were selected based on proximity to planned facilities as proposed by Resolution Copper (RC) for the Resolution mine project. The catalog was prepared by Montgomery & Associates (M&A) and WestLand Resources, Inc. (WRI) on behalf of RC.

As part of continuing biological resources support for Resolution’s GPO, WestLand conducted surveys for special-status plant species associated with water features that occur in the vicinity of the GPO (Study Area). The objective was to survey for special-status species with potential to occur in the Study Area, and to continue compiling baseline data on wetland and riparian plant species at a combination of lentic (ponds and stock tanks) and lotic (perennial and intermittent drainages, seeps, and springs) habitats (hereafter, “sites” and “reaches”, respectively).

Fourteen sites were studied to provide baseline technical hydrologic monitoring in the Oak Flat area within or adjacent to the projected disturbance zone of the proposed RC block cave mine.

This report presents a flood-duration flow frequency analysis for selected durations (1 day, 3 day, 7 day, 15 day, and 30 day) at 173 streamgaging stations throughout Arizona and in western New Mexico.

Computed flood flow frequency and volume‐duration‐frequency values for points of interest on Queen Creek and Devil’s Canyon.

Flooding is among the worst natural disasters responsible for loss of life and property in Arizona, underscoring the importance of accurate estimation of flood magnitude for proper structural design and floodplain mapping. Twenty-four years of additional peak-flow data have been recorded since the last comprehensive regional flood frequency analysis conducted in Arizona. Periodically, flood frequency estimates and regional regression equations must be revised to maintain the accurate estimation of flood frequency and magnitude.

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. The catalog was prepared by Montgomery & Associates and WestLand Resources Inc on behalf of Resolution Copper.

The principal objective of this report is to present and review groundwater level and hydraulic head data for the RC hydrologic monitoring network.

This report is an addendum to the Surface Water Baseline Report prepared by M&A (2013) that includes detailed analysis and discussion of surface water monitoring results in the Resolution Project study area; Devils Canyon, Queen Creek, and Mineral Creek.

A series of stream gauges is located within the upper Queen Creek, Devil’s Canyon, and Mineral Creek watersheds, located near Superior, AZ. These gauges are owned and maintained by Resolution Copper Mining (RCM). The historical stream gauge records were analyzed by JE Fuller Hydrology & Geomorphology, Inc in order provide an assessment of the quantity and quality of the surface water data. These data were also used to characterize and quantify volumetric surface water discharge characteristics in the three watersheds.

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Video & Materials

A video presentation – the same information introduced at each public meeting – as well as meeting materials (posters and newsletter) are available for public review.

Video - Draft EIS

Public Meeting Materials

Draft EIS Released

The Draft Environmental Impact Statement (DEIS) for the Resolution Copper Project and Land Exchange is now available for review under the 'EIS Info' tab.

Draft EIS

Comment on DEIS

Optional ways to comment on the Draft EIS are located under the 'EIS Info' and the 'Public Involvement' tabs.

Comment

Media & General Info

Point of Contact
John Scaggs
Tonto National Forest
john.scaggs@usda.gov

Apache Leap Special Management Area
Apache Leap SMA website