# 5.8 - Detailed Blaney-Criddle Summary Output File (*.obc)

The detailed Blaney-Criddle output file (*.obc) is generated when flag1= 1 in the model control file (see Section 4.4). This option provides detailed results of the Blaney-Criddle consumptive use calculation during the growing season for all crop types associated with each structure by year including the following:

• percent of the month considered in the calculation,
• average temperature and daylight hours,
• Blaney-Criddle coefficients $$f$$ , $$k_t$$, $$k_c$$, and $$k$$ as defined in SCS TR-21,
• potential evapotranspiration,
• effective rainfall, and
• irrigation water requirement.

An example is provided in Appendix A.