4.6 - Structure Location File (*.str)
StateCU allows two types of crop consumptive use analysis: (1) Climate Station Scenario – based on a unit
acreage at a climate station location, or (2) Structure Scenario – based on a specified acreage at a structure
location. The iclim flag in the StateCU model control file (*.ccu) specifies whether the analysis is a Climate
Station Scenario (iclim= 0) or a Structure Scenario (iclim= 1). The structure file provides non-time variant
properties for the consumptive use locations. A structure location file must be provided for both types of
analysis. With a Climate Station Scenario, the structure ID and name will be identical to the climate station
ID and name in the climate station (*.cli) file and the precipitation and temperature weights will be set to 1.0
unless the structure is representing a field location or weighted climate station. In that case, up to five
different climate stations and corresponding temperature and precipitation weights can be specified (see Section
3.1.7). In addition, an orographic adjustment can be specified for selected climate stations, as described in
Section 3.1.7. The structure information file is required for all crop consumptive use model runs. An example
file is provided in Appendix A.
| Row-Data | Program Variable | Description |
|---|---|---|
| Row 1 | Format (a12, f6.2, f9.2, 2x, a10, 10x, i8, 2x, a24, 4x, f8.4) | |
| 1-1 | bas_id(1) | Structure ID, stored in first 12 characters of bas_id(i) |
| 1-2 | blat(1) | Structure latitude |
| 1-3 | blev(1) | Structure elevation |
| 1-4 | ttcount(1) | Location1 (County or other location information |
| 1-5 | tthuc(1) | Location2 (HUC or other location information |
| 1-6 | bas_id(1) | Structure name, stored in last 24 characters of bas_id(i) |
| 1-7 | ncli | Total number of climate stations |
| 1-8 | awrc(1) | Soil moisture capacity (water supply limited analysis only, inches/inch) |
| Row 2 | Format (a12, f6.2, 3f9.2) | |
| 2-1 | wsid(1) | Climate Station ID |
| 2-2 | wws(1) | Temperature and Frost Date Weight (fraction) |
| 2-3 | wrs(1) | Precipitation weight (fraction) |
| 2-4 | ota(1) | Orographic adjustment in degF per 1000 feet for temperature (blank or 0 if no orographic adjustment) |
| 2-5 | opa(1) | Orographic adjustment factor for precipitation (blank or 1 if no orographic adjustment) |
Repeat for the number of climate stations (up to 5 per structure/blended climate station).
Repeat for the number of irrigation structures.