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GroMoPo Metadata for Lower Cachapoal River irrigation canal model


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Created: Feb 07, 2023 at 8 p.m.
Last updated: Feb 07, 2023 at 8 p.m.
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Abstract

Agricultural production of high value crops in Chile's Central Valley is highly dependent on surface and groundwater resources. They are connected and together form an integrated hydrological system, the individual components of which have to be studied. This research is addressed to answering two questions: 1) to what extent do irrigation and canal seepage contribute to groundwater recharge and 2) what is the influence of the interactions between the Cachapoal River and ground water. The study was carried out from 2003 to 2007 in Peumo Valley (34.3 S, 71.3 W). In winter, the irrigation canal network intercepts and diverts surface runoff, which flows to flat areas and recharges groundwater. In summer, infiltration from the canals recharges the aquifer directly and partially compensates for water uptake from plants and evaporation. The effects of both interactions keep groundwater at a relatively constant level over the whole year. The water balance of the valley is strongly affected by agricultural practices, groundwater recharge mainly originating from irrigation loss (22%) and canal seepage (52%). It is important to know how management decisions, such as change in irrigation practices or canal lining, can affect the hydrological system and agricultural production within the valley.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Chile
North Latitude
-34.3697°
East Longitude
-71.1551°
South Latitude
-34.4088°
West Longitude
-71.2042°

Content

Additional Metadata

Name Value
DOI 10.4067/S0718-58392009000100002
Depth
Scale 101 - 1 000 km²
Layers 1 layer
Purpose Groundwater resources
GroMoPo_ID 120
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.4067/S0718-58392009000100002
Model Time SS
Model Year 2009
Model Authors Arumí, J.L.; Rivera, D.; Holzapfel, E.; Boochs, P.; Billib, M. Fernald, A.
Model Country Chile
Data Available Report/paper only
Developer Email jarumi@udec.cl
Dominant Geology Unsure
Developer Country Chile
Publication Title Effect of the Irrigation Canal Network on Surface and Groundwater Interactions in the Lower Valley of the Cachapoal River, Chile
Original Developer No
Additional Information
Integration or Coupling
Evaluation or Calibration Static water levels
Geologic Data Availability

How to Cite

GroMoPo, S. Ruzzante (2023). GroMoPo Metadata for Lower Cachapoal River irrigation canal model, HydroShare, http://www.hydroshare.org/resource/f16d245787ad46c4a90d395903d608da

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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