Chapter 8 Fetter Geology of Groundwater Occurrence-Gaza Strip
“That’s Not A Levee Boil !” or “How to do more with less” By Glen Pearson, Northern...
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Transcript of “That’s Not A Levee Boil !” or “How to do more with less” By Glen Pearson, Northern...
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““That’s Not A Levee Boil !” That’s Not A Levee Boil !”
oror “How to do more with “How to do more with
less”less” ByByGlen Pearson , Northern DistrictGlen Pearson , Northern District
2005 Annual2005 Annual Geology and Groundwater MeetingGeology and Groundwater Meeting
Marconi Center Marconi Center November 15-17, 2005. November 15-17, 2005.
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1984 - 19871984 - 1987It was the Best of Times It was the Best of Times
andandIt was the Worst of TimesIt was the Worst of Times
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It was Good - because I It was Good - because I was young and was young and enthusiastic;enthusiastic;
It was bad - because It was bad - because Funding was Tight Funding was Tight
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Sacramento River Sacramento River Seepage Seepage
InvestigationInvestigation
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Study ObjectivesStudy Objectives
• Identify the Extent and Causes of Saturated Ground from the Sacramento River to the Colusa Basin Drain.
• Define Alternative Solutions.
• Document Findings in a Summary Report
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Previous StudiesPrevious Studies• USBR Seepage Investigations 1941-48• Seepage Survey of 1952 – U.C. Extension• DWR Sacramento River Seepage Investigation 1953-
1955.• DWR Sacramento River Seepage Investigation 1959-
1967.• DWR Colusa Basin Drain Investigation 1964• USBR Seepage and Drainage Investigation 1980
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LocationLocationMapMapSeepage
Study Area
N
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Seepage Study Areas – 1984-1987Seepage Study Areas – 1984-1987
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Erdman Study AreaErdman Study Area(Borrowed Flight)(Borrowed Flight)
Colusa Basin Drain
Sacramento River
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Study ParticipantsStudy Participants• California Department of Water Resources
• U. S. Bureau of Reclamation
• U.S.D.A. – Soil Conservation Service (now NRCS)
• Colusa County Resource Conservation District
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What Did We Do?What Did We Do?
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Visit the Site - Zone 2 Levee RoadVisit the Site - Zone 2 Levee Road(looking North)(looking North)
Sacramento River – Flood Stage
River Seepage
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From Zone 2 Levee RoadFrom Zone 2 Levee Road(looking West over Prune Ochard)(looking West over Prune Ochard)
Note Clear Water
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From Zone 2 Levee RoadFrom Zone 2 Levee Road(looking West over Prune Ochard)(looking West over Prune Ochard)
Seepage
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From Zone 2 Levee RoadFrom Zone 2 Levee Road(Prune Ochard w/ Drain System)(Prune Ochard w/ Drain System)
No Seepage
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Geologic MapGeologic Map
((From Soils Mapping & From Soils Mapping & Confirmed by Harwood Confirmed by Harwood
and Helly, 1985)and Helly, 1985)
Geologic UnitsOrange = Flood Plain DepositsDark Green = Flood Basin DepositsLime Green = Flood Channel DepositsLight Green = Younger Basin DepositsPink = Older Basin Deposits
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1985 Land Use Map1985 Land Use Map
LegendLite Green = RiceYellow = FallowLite Blue = WheatTurquoise = Sugar BeetsBrown = Row CropsDark Greens = OrchardReds = Safflower & vines
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Sacramento River Stream Gage Sacramento River Stream Gage Winter 1986Winter 1986
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Staff Gage in DrainStaff Gage in Drain(Monitoring Drain Water Levels – scrounged 2X4)(Monitoring Drain Water Levels – scrounged 2X4)
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SCS – Truck Mounted AugerSCS – Truck Mounted AugerMonitoring Well InstallationMonitoring Well Installation
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SCS Trailer Mounted AugerSCS Trailer Mounted AugerMonitoring Well InstallationMonitoring Well Installation
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USBR Contractor – Hollow Stem AugerUSBR Contractor – Hollow Stem Auger
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USBR Contractor – Hollow Stem AugerUSBR Contractor – Hollow Stem AugerIs This A Fat Clay?Is This A Fat Clay?
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Developing Wells
With Landowner’s
Air Compressor
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Backwater from Colusa Basin Drain &Backwater from Colusa Basin Drain &Monitoring Well InstallationMonitoring Well Installation
Monitoring Well
Colusa Basin Drain
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Installed Monitoring Wells w/ Borrowed Stevens F-Type Installed Monitoring Wells w/ Borrowed Stevens F-Type recordersrecorders
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Shallow Zone Aquifer TestShallow Zone Aquifer Test
120 Ft deep extraction well120 Ft deep observation well
Hand Augered 20 Ft deep Obs. well
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Monitoring Well Monitoring Well Location MapLocation Map
Types of WellsShallow (Augered 20 Ft +/-)Intermediate (HS 40 Ft +/-) Deep (Rotary 120 Ft +/-)Private (Dom – 150 +/-; Irr – 300 +/-)
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July 22, 1985July 22, 1985
GW flow Towards or GW flow Towards or Parallel to the Parallel to the
Sacramento RiverSacramento River
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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December 12, 1985December 12, 1985
GW flow Towards the GW flow Towards the Sacramento RiverSacramento River
(No Rain, No Irrigation, Low (No Rain, No Irrigation, Low Flow )Flow )
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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February 20, 1986February 20, 1986
GW flow Away from the GW flow Away from the Sacramento RiverSacramento River
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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March 22, 1986March 22, 1986
GW flow is Away from GW flow is Away from Sacramento RiverSacramento River
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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April 16, 1986April 16, 1986
GW flow is Away from GW flow is Away from Sacramento RiverSacramento River
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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May 15, 1986May 15, 1986
GW flow Towards or GW flow Towards or Parallel to the Parallel to the
Sacramento RiverSacramento River
Depth to GroundwaterRed = 0-2 feetGreen = 2-5 feetYellow = Greater than 5 feet
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Possible AlternativesPossible Alternatives• Improve Sacramento River Operations
• Improve Local Surface Water Drainage
• Well Point– Shallow Wells with Conjunctive Use– Farm Subsurface Drainage Systems– Regional Collectors
• Perforated Pipe
• Open Ditch
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Study AlternativesStudy Alternatives• Alternative 1
– Pump Discharge to Colusa Basin Drain
• Alternative 1– Pump Discharge to Sacramento River & Colusa Basin
Drain
• Alternative 3– Gravity Conveyance & Pump Discharge to Sacramento
River
• Alternative 4– Gravity Conveyance & Discharge to Colusa Basin Drain,
and Pump Discharge to Sacramento River
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A SolutionA Solution
Relief Wells & Relief Wells & Subsurface Drains to Subsurface Drains to Colusa Basin DrainColusa Basin Drain
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A SolutionA Solution
Subsurface Drains w/ Subsurface Drains w/ Water Pumped into Water Pumped into Sacramento RiverSacramento River
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During 1987-92 Drought During 1987-92 Drought Studies TerminatedStudies Terminated
1997 Flood Event - Reports 1997 Flood Event - Reports from Colusa County About from Colusa County About Boils All Along Toe of LeveesBoils All Along Toe of Levees
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Lessons LearnedLessons Learned• Seepage is a Groundwater Problem• There is a lot you can do without spending a
lot of money• You can use CDEC to determine sampling
times• Partnering with others can pool resources• Having Landowners Cooperation is worth its
weight in Gold• Use Existing Data and Make Decisions on
the Data that are available. Why We Get Paid the Big Bucks.
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When You Are District Chief of the
Northern District…..
There is No Job Too Small or Insignificant.