RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and...

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RGDSS Modeling Meetings Mike Sullivan, P.E. Deputy State Engineer James Heath, P.E. Lead Modeler November 13 and 14, 2013

Transcript of RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and...

Page 1: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

RGDSS Modeling Meetings

Mike Sullivan, P.E. ‐ Deputy State Engineer

James Heath, P.E. ‐ Lead Modeler

November 13 and 14, 2013

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Introductions

• Mike Sullivan

• James Heath

Page 3: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Outline

• General Concepts– Rely on these throughout discussion

• Geology 101

• Hydrology 101

• Hydrogeology 101

• Modeling 101

• Additional Discussions

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General Concepts

• Soil types and seepage losses

• Ditch loss recharging the aquifer system

• Overview of aquifer system

• Well pumping cones of depression

Page 5: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

General Concepts

• Soil types and seepage losses– What are the characteristics of different soil types?

• Gravel

• Sand

• Clay

• Membrane/Bentonite Liner

• Concrete Liner

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General Concepts

• Ditch loss recharging the aquifer system– Empire and Monte Vista Canal losses

– Mogote Ditch losses

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General Concepts

• Overview of Aquifer System– What is an unconfined aquifer?

– What is a confined aquifer?

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General Concepts

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General Concepts

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General Concepts

• Cones of depression from well pumping– What do cones of depression look like?

– Where does the water come from?

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Page 12: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

General Concepts

Dewatering of Aquifer Release of Aquifer Pressure

Page 13: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

General Concepts

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Geology 101

• Formation of the Valley

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San LuisHills

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Geology 101

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Hydrology 101

• How the river systems deposited the different formations of the geology.

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San Luis Valley OverviewLooking Northeast

Vertical Exaggeration = 10x

Alamosa

Conejos

Monte Vista

Saguache

Center

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Approximate extent of Rio Grande alluvial fan, observed extent ofmeanders and oxbows, and the modern Rio Grande floodplain. (see Madole, R.F., et al, 2008).

Page 20: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments, figures 2.1, 2.2, 2.13.

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Hydrology 101

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Hydro‐Geology 101

• Movement of water within the groundwater system of the San Luis Valley

• Groundwater pumping impacts on streams

Page 23: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Hydro‐Geology 101

• Movement of water within the groundwater system of the San Luis Valley

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Hydro‐Geology 101

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Hydro‐Geology 101

• Groundwater pumping impacts on streams

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Hydro‐Geology 101

• What happens when the big confined aquifer wells turn on? 

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Hydro‐Geology 101

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McIntyre Springs Discharge Measurements (1936-2013)

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Hydro‐Geology 101

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Hydro‐Geology 101

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Modeling 101

Q = k I A

Page 31: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Modeling 101

• Modeling process – Part 1

• Modeling data

• Modeling process – Part 2

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Modeling 101

• Modeling process – Part 1

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HydroBase

MODFLOW

GIS Data (Spatial Data)

TSTool & StateDMI

CDSS Tool Box & StateDGI

StateCU

Page 34: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Modeling 101

• Modeling data

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• Irrigated acreage

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• Location of wells with metered diversion records

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• Diversion structures

• Streamflow gages

• Climate stations

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San Luis Valley Cut AwayLooking West

Vertical Exaggeration = 10x

Alamosa

Monte Vista Saguache

Center

Conejos

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Modeling 101

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Modeling 101

• Modeling process – Part 2

Page 42: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

HydroBase

MODFLOW

GIS Data (Spatial Data)

TSTool & StateDMI

CDSS Tool Box & StateDGI

StateCU

Page 43: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Decision Supp

ort P

rocess

RGDSS GROUNDWATER MODEL WORKSHOPJANUARY 10‐12, 2011 

PROCESS/DATA FLOW DIAGRAM                                                                 

HYDROBASE Basic Water Data 

 

Diversions/Structures Water Rights Well Info 

Climate Data Irrigated Parcels

AGG Aggregates individual ditches to make the MS and ADW 

structures 

PRISMPRISM Climate Group, Oregon

State University, http://www.prismclimate.org,

created 4 Feb 2004 

Historic Runs  

• Steady State: 1990‐1998 • Steady State: Average Monthly • Initial Period: Steady State 1950‐

1969 • Transient: 1970‐2009 

STATEPP – Modified for RGDSS 

 

INPUT:  StateCU, StateDGI, AGG, and PRISM  OUTPUT: MODFLOW Recharge Packages                    MODFLOW ET Packages                    MODFLOW Well Packages       MODFLOW Drain Packages 

SCALE:  Model Cell Time Frame: Model Period Time Step: Monthly RUNS:  Historic    No Pumping   Recharge Decrees 

General Input FilesNAM File – Names all input files BAS Package ‐ General Setup 

BCF Package – Aquifer Parameters DIS Package – Discretization  GHB Package – Boundaries 

HFB (Horizontal Flow Barrier) Package – Mesita Fault OC Package‐ Output Control  

Solver Package 

<

MODFLOW

Stream PackageMajor Programs 

Mkstr: Reads GIS coverage and creates initial network Mkq: Prepares flow files for each stress period Build: Performs data integration MODEx: Produces MODFLOW stream package

GIS DATA (Spatial Data) – ARCVIEW 

Ditch Service Areas    County, HUC    Land Use  Aerial & Satellite Imagery Rim Inflow Areas    Drains      Diversions  Model Grid/Layers     Climate Stations    Soils      Stream Gages  GW Only Area Boundaries Sprinklers (1975‐98)    Wells/Irrigated Lands (1936, 1998, 2002, 2005)       

SCALE: Parcel  Time Frame:  Variable 

TSTOOL/STATEDMI 

Tools for downloading and enhancing data from HydroBase  

User/GIS generated lists provide input files 

CDSS TOOL BOX & STATEDGI 

INPUT:      GIS Files OUTPUT: Canal Length                   Irrigated acreage by ditch       Irrigation wells      

    Irrigated crop for subirrigation                  Wells assigned to cells/layers 

                  Small flowing wells assigned to cells                   Rim Inflow Areas assigned to cells       Native Vegetation areas                   Available Water Content SCALE: Parcel/Structure/Model Cell Time Frame: Snapshots (1936, 1998, 2002, 2005)  RUNS: One run for each of the snapshot years 

MODFATE Iterative program that estimates fate of surface 

water return and drain flows 

M&I Well Pumping and Recharge Command Files 

Plus Rim Recharge Command File 

mksubProgram that builds Subdistrict input 

files, one for each Subdistrict 

Mkrcdwb: Program that creates 3rd dwb file needed for simulating the recharge decrees

STATECU PROGRAM 

INPUT: RCU file + other files created by DMI’s   OUTPUT File (*.DWB):   

    Canal Losses      Non‐Consumed SW & GW      Effective Precipitation      GW Pumping for irrigation      Ditch Shortage of subirrigation 

                    IWR for crop subirrigation SCALE:  Ditch /Structure   TIME FRAME: Model Period TIME STEP: Monthly RUNS:  Historic                No Pumping 

Subdistrict Response Function Runs   

1. No Pumping Run: 1970 ‐2009 (includes recharge decrees )  2. Historic Response Calibration Data: Transient Historical Run minus No Pumping Run (1970‐2009) 3. Annual Response Functions (1988 – 2009) used to derive calibrated Wet, Dry and Average Year 

Response Functions.  4. Wet, Dry and Average year responses are combined and adjusted to “calibrate” to the Historic 

Response Calibration Data.   5. Calibrated Wet, Dry and Average year response functions used to estimate future pumping 

impacts. 

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Additional Discussions

• Sustainability

• Drought

• Other?

Page 45: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Sustainability

Subdistrict No.1, Plan of Water Management 

Sustainability Objective for Unconfined Storage Levels 

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Sustainability

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Drought

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Original water table

Page 51: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Without pumping - ground water discharge to stream

With pumping - ground water discharge to stream

Page 52: RGDSS Modeling Meetings...Typical sedimentary deposits by braided stream channels (top) and meandering stream channels (bottom). Modified from R. C. Selley, Ancient Sedimentary Environments,

Difference in ground water discharge to stream