coconino county cinder lake investigation jamie p. macy, lee amoroso, jeff kennedy, and joel unema...
TRANSCRIPT
Coconino County Cinder Lake Investigation
Jamie P. Macy, Lee Amoroso, Jeff Kennedy, and Joel Unema
U.S. Geological SurveyIn cooperation with Coconino County, AZ
and the U.S. Forest Service
Study Area
Schultz Fire
July 19, 2010 flood from Schultz Fire
runoff
Ditchesmove water to
Cinder Lake AreaCampbell
Copeland
Objective
• The objective of this study is to determine the depth of cinders to basalt in the Cinder Lake area for potential water storage of runoff from the Schultz Fire burn area in northeast Flagstaff, AZ.
Approach• Monitoring Wells– 4 boreholes
• Geophysical Surveys – TEM– Other geophysical techniques (CSAMT and GPR)
• Stream gages– 2 USGS stream-gages
• USGS Cooperative Support– Gravity Measurements– Report Publication
Cinder Lake Investigation
Drilling
Sunset Crater Well
0' - 700' Volcanics
700' - 1000' Kaibab Limestone
1000' - 1830' Coconino Sandstone
1830' - 2200' Supai Formation
0' - 120' Silt, sand
120' - 180' Gravel and
Cinders
180' - 210' Black cinders.
210' - 300' Basalt
300' - 580' Kaibab Limestone
580' - 740' Toroweap
Formation
740' - 1400' Coconino Sandstone
1400' - 1802' Schnebly Hill and Supai Formations
Marijka Well inDoney Park
0' - 20' Tan silt and basaltic sand with minor basalt gravel.
20' - 55' Vesicular basalt.
55' - 205'
Hard, dense basalt.
205' - 260'
Moenkopi Formation
260' - 560'
Kaibab Limestone
560' - 1740'
Coconino Sandstone
1740' - 2295'
Schnebly Hill Formation
Doney Park WellDPW-1
Well Cl-1Black Cinders
Sand and Silt
Sand, Silt, and Clay
Cinders and Clay
Black Cinders
Large Black Cinders
Sand
Large Black Cinders
Silty-Sand
Basalt
0' - 2.5'
2.5' - 9.5'
9.5' - 12.0'
12.0' - 12.5'
12.5' - 20.0'
20.0' - 24.0'
24.0' - 25.5'
25.5' - 29.5'
29.5' - 31.0'
31.0' - 42.5'
Provisional Data-Subject to Change
Well Cl-3
0' - 3.5'
3.5' - 5.0'
5.0' - 6.0'
6.0' - 12.0'
12.0' - 16.0'
16.0' - 21.0'
21.0' - 21.5'
21.5' - 23.0'
23.0' - 27.0'
27.0' - 29.0'
29.0' - 41.0'
Black Cinders
Sandy CindersSand, Silt, and Clay
Silty-Sand
Sandy Cinders
SandSandy Cinders
Silty-Sand
Basalt
Silty-Sand
Cinders
56%
% Porosity
38%52%
34%
52%
36%
43%
38%
Water Storage acre-ft
588 acre-ft171 acre-ft156 acre-ft
612 acre-ft
456 acre-ft
1092 acre-ft
432 acre-ft
258 acre-ft
Estimated total storage for study area is ~4,000 acre-ft
Provisional Data-Subject to Change
No water in Wells & Fractured Basalt
Water-Level Monitoring Equipment• Wells are outfitted with pressure transducers
for continuous water-level monitoring• Wells outfitted with telemetry
Provisional Data-Subject to Change
USGS Streamflow-Gages•Copeland Ditch
•Girl’s Ranch Ditch
• Gages Installed August 5, 2011• Copeland Ditch 2011 – August-September ~44 acre-ft– October-present ~25 acre-ft
• Girl’s Ranch Ditch 2011– September ~6 acre-ft
USGS Streamflow-Gages
Geophysical Investigation
TEM
Well 3Well 1Well 2
Basalt
Cinder and Alluvial Deposits
Gravity•19 gravity measurement locations
•7 wells (blue dots), other 12 (red dots) located throughout Cinder Lake
•Absolute and relative measurements
•Is water moving vertically or horizontally?
Gravity
•Green dots ~ 2.5 ft of water added to the subsurface
•Yellow dots - little to no water added to the subsurface
•Red dots – no water added to the subsurface
PROVISIONAL DATA – SUBJECT TO CHANGE
USGSOpen-File Report
http://pubs.usgs.gov/of/2012/1018/
Thank You & QuestionsJamie P MacyUSGS - Flagstaff Programs2255 N. Gemini Dr.Flagstaff, AZ 86001Email: [email protected]: 928-556-7276