Irrigated acreage used in TOPNET

[ChristinaB]

Following is a description (and any needed clarifications) of irrigated acreage used in TOPNET, for as much of the MODFLOW domain as overlaps with TOPNET domain.

[ChristinaB]

Irrigated acreage used in Topnet is controlled in basinpars.txt, which
is the primary parameter input file for drainage-based parameters - e.g., for WRIA1 model extent there 172 drainages and 172 rows of parameters in basinpars.

[ChristinaB]

Format_basinpars.pdf contains all of the metadata for the basinpars file. (We have a file like this for every Topnet file - see the folder: ModelFilesDescriptions

[ChristinaB]

In the attached Excel spreadsheet, I imported the basinpars text file and extracted Bertrand Creek and Fishtrap as an example, deleting all parameters except those related to irrigation. Note that direct area is in mm2, converted here manually to km2. The irrigated fraction of Bertrand Creek area (95 km2 ) is 37%. Of that 37% irrigation, 38% is the sprinker fraction of irrigation (with the remaining 62% drip irrigation). The combined weighted irrigation efficiency for Bertrand is 75%. Note 1: Bertrand is CatchID 87 and DrainageID 6. These two numbers should not be confused! (it's a team effort to keep these numbers straight, so always double check)
basinparsWRIA1.xlsx
Note 2. This version of basinpars is the model input for the Lower Nooksack Water Budget 2012 project.

Name	CatchID	DownCatchID	DrainID	NodeId	direct_area_mm	IrrigatedFraction	SprinklerFractionofIrrigation	IrrigationEfficiency	direct_area_km
Fishtrap	86	2	7	90	9.58E+13	37%	38%	81%	95.80
Bertrand	87	2	6	515	1.09E+14	24%	60%	75%	109.00

[ChristinaB]

Christina needs to send

• Bertrand creek irrigated acreage

• WRIA 1 irrigated acreage from LNWB or 2007

[ChristinaB]

Make a package of model results for WMon
TBD WMoff, Artifical Drainage
ExampleWaterUseTemplate_201808831.xlsx