Water & Courtesy F. Phillips and S. Mills Salt Inputs/ Cyclic - - PowerPoint PPT Presentation

Cyclic salts and Weathering Saline Groundwaters Geothermal waters Waste water

Water & Salt Inputs/ Outputs

Riparian Transpiration Agricultural Evapotranspiration Open Water Evaporation Consumptive use

Courtesy F. Phillips and S. Mills

Conceptual Model of Water Dynamics

R iver flow ir r igation pr e c ipitation

Gro undwa te r re c ha rg e a nd disc ha rg e

West E a s t dr ain L F CC R io Gr ande Well pumping tr anspir ation e vapor ation L F CC gain

Gro undwa te r

r ec har ge and disc har ge

Demands On Water R esour c es

AVERAGE CONSUMPTIVE USE FROM SAN ACACIA TO SAN MARCIAL

12% 52% 27% 8% 1%

Groundwater Outflow Riparian ET Crop ET Open Water Evap M&I Depletion

Ma g da le na Mo unta ins

N

So c o rro Sa n Anto nio

60

380

Sa n Ac a c ia

I-25

Sa n Ma rc ia l Rio Gra nde

Re g io na l mo de l - I SC T e le sc o pic mo de l

• sma lle r do ma in
• re fine d g rid
• c o nsta nt he a d fro m re g io na l mo de l

Area of Interest for High- Resolution Modeling

Key Data Collected

Geologic Data

• Stratigraphy (color, grain size, hydraulic conductivity)

Aquifer Data

• Hydraulic conductivities (aquifer testing)
• Water-elevation time series

Surface-Water Data

• Locations and elevations of river, canals, and drains
• Surface-water stage time series

Stratigraphy

Legend

No Sample Clay, Sandy Clay Silt, Silt & Fine Sand Fine Sand Fine to Medium Sand, Medium Sand Fine to Coarse Sand, Coarse Sand Sand and Gravel, Gravel Clayey Gravel Santa Fe Group Bedrock Water Surface

400 ft 20 ft

HWY-W02 HWY-E01HWY-E02

HWY-E03

East Rio Grande

4560 4540 4520 4500 4480 4460

HWY-W06 HWY-W03 HWY-W04 LFCC HWY-W07

Valley alluvium Santa F e F

• r

mation L ayer 3 L ayer 2 L ayer 1

West

Stratigraphy

Aquifer Testing Aquifer Testing

Aquifer Test Instrumentation

0.5 mile s no rth o f Hig hwa y 380 in Sa n Anto nio So c o rro Rive rside Dra in L F C C Rio Gra nde

Legend

Well 0-20 feet Well 40-50 feet Well 80-90 feet Staff gage Extraction well

10 07 09

L F CC R io Gr ande

Low-permeability zone

T ime -dra wdo wn o f ne ste d we ll W07A,B,C r o f W07 = 15 fe e t

0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 0.01 0.1 1 10 100 1000 10000

Elapsed Time (min) Drawdown (ft)

Legend

Well 0-20 feet Well 40-50 feet Well 80-90 feet

L F CC R io Gr ande

Low-permeability zone

Model Grid

Do ma in is 320 ro ws x 170 c o lumns = 54400 g rid c e lls OR 6 mile s x 3 mile s = 18 mile s2 re g io na l mo de l g rid is 1000 fe e t x 1000 fe e t T e le sc o pic mo de l g rid is 100 fe e t x 100 fe e t

Three-Layer Model

L a ye r 1 - sa nd

0 fe e t 35 fe e t

L a ye r 3 - sa nd/ g ra ve l

0 fe e t 75 fe e t

L a ye r 2 - c la y/ silt

Surface Water System

De sig na tio n o f g rid c e lls to

re pre se nt dra ins, L F CC, a nd rive r.

E

a c h c e ll ha s va lue s fo r:

• sta g e
• c o nduc ta nc e
• b o tto m e le va tio n
• b e d thic kne ss
• ve rtic a l hydra ulic

c o nduc tivity

Model boundary

San Antonio Ditch Luis Lopez Drain Luis Lopez Ditch Rio Grande Socorro Riverside Drain Socorro Main Canal Mosley Lateral Apodaca Lateral LFCC 1 Mile

N

Str eam –aquifer System R epr esentation of Str eam –aquifer System

Rive r Surfa c e Wa te r T a b le Stre a mb e d Rive r Sta g e (HRI V) I mpe rme a b le Wa lls M W RBOT

Rive rb e d Co nduc ta nc e = K L W M

MODF L OW Rive r Pa c ka g e :

• Riv1 (MODF

L OW 83) L a nd Surfa c e He a d in Ce ll (h)

Estimation of River Stage

Gage reading at San Marcial Stage height input for model

0.00 0.50 1.00 1.50 2.00 Oct Dec Jan Mar May Jul Sep Nov Jan Mar May Jul

Stage (feet)

8.1 8.3 8.5 8.7 8.9 9.1 9.3 9.5 9.7 9.9

Evapotranspiration

R ipar ian Cr

• ps

Legend

Crop and pasture Riparian Sandbars Other or inactive

I K ONOS – July 2000

Prescribed Head

r egional model

Co nsta nt he a d b o unda ry de te rmine d fro m re g io na l mo de l fo r e ve ry stre ss pe rio d

telesc opic model

Model Calibration

IN af/yr River seepage 34,037 Net boundary influx 6,052 TOTAL IN 40,089 OUT LFCC seepage 31,930 Evapotranspiration 8,191 TOTAL OUT 40,121 IN - OUT

• 33

4535 4540 4545 4550 4555 4560 4565 4570 4575 4535 4545 4555 4565 4575

Observed Heads (ft amsl) Simulated Heads (ft amsl)

10 - 25 ft 40 - 70 ft R2=0.97 RMS = 5.22 ft Screen Depth

Gro undwa te r Budg e t