use of response functions to administer water rights awse spring meeting salt lake city, utah june...
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Use of Response Functions to Administer Water Rights
AWSE Spring MeetingSalt Lake City, Utah
June 2015Michael Sullivan
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Integrating Groundwater and Surface Water Administration
• Water Admin: Daily on/off of water rights• Well depletions impact streams• Can’t directly measure depletions so use model
to determine impact:– Glover/AWAS/Finite Difference Model
• Simple system = simple model• Complex system = complex model
– More complex makes prediction difficult.– Use RF to distill historic results to predict future
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Delayed Depletions
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Drought
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Modeling
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HydroBase
MODFLOW
GIS Data (Spatial Data)
TSTool & StateDMI
CDSS Tool Box & StateDGI
StateCUStateCU
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Why RF’s
• Complexity of systems, quick analysis of impacts– Example: South Platte vs. Rio Grande Basin
• Results model vs. Prediction model • Ease of use for users
– Scenarios to build funding case for GWMP– Short time frame for ARP
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San
Juan
Mou
ntai
ns
San LuisHills
Sangre de Cristo Mountains
Confining Clays
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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 OverviewLooking Northeast
Vertical Exaggeration = 10x
Alamosa
Conejos
Monte Vista
Saguache
Center
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San Luis Valley Cut AwayLooking West
Vertical Exaggeration = 10x
Alamosa
Monte Vista Saguache
Center
Conejos
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HydroBase
MODFLOW
GIS Data (Spatial Data)
TSTool & StateDMI
CDSS Tool Box & StateDGI
StateCUStateCU
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Dec
isio
n Su
ppor
t Pro
cess
RGDSS GROUNDWATER MODEL WORKSHOP JANUARY 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
PRISM PRISM 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 Files
NAM 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 Package Major 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
mksub Program 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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Model output
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Response Function
• NGWCU, Forecast Streamflow, Year Type
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Response Areas
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Annual Replacement Plan
• Projected NGWCU• Projected year• RF used• Water Supply for replacement• Agreements• Long term coverage of extended depletions
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Daily Administration
• Table 3 used to determine replacement daily• Water users tell what source to use each day• If conditions change (snowpack) may be able
to respond with an amendment• End of year review
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Questions???