HF002

Attributes in entity 4: Date ranges where individual rating curves are applied		Details
1. DBCODE Definition: FSDB database code Domain: enum
2. ENTITY Definition: Entity number Units: number Domain: range (minimum = 4.  maximum = 4.)
3. STUDY_AREA Definition: Study area code Domain: enum
4. SITECODE Definition: Site code Domain: place
5. EQ_SET Definition: Rating equation set for the current flume status, generally assigned alphabetically over time as rating curve changes Domain: enum
6. EQ_VER Definition: Rating equation set version - the highest version number is current for each equation set Units: number Domain: range (minimum = 1.  maximum = 4.)
7. EQN_SET_CODE Definition: Equation set code represents a distinct code, that is cross-referenced in HF00401 discharge output, for every equation set from each study area and site including all relevant versions over time Domain: enum
8. BGN_DATE_TIME Definition: Beginning datetime where this equation set and version is the operative equation for calculating discharge from stage height - used starting water year 2014 (entity 3), or beginning of correction period (entity 6) Units: date as datetime type Domain: range (minimum = Aug 25 1949 12:01AM  maximum = Sep 14 2017 4:55PM)
9. END_DATE_TIME Definition: Ending datetime where this equation set and version is the operative equation for calculating discharge from stage height - used starting water year 2014 (entity 3), or ending of correction period (entity 6) Units: date as datetime type Domain: range (minimum = Sep 30 1949 12:00AM  maximum = Jan 1 2051 12:00AM)
10. EFFECTIVE_DATE_BGN Definition: The beginning date where this equation set is the operative equation for calculating discharge from stage height (used for all years through 2013) - operative equation set only changed at midnight during this time Domain: freetext
11. EFFECTIVE_DATE_END Definition: The ending date where this equation set is the operative equation for calculating discharge from stage height (used for all years through 2013) - operative equation set only changed at midnight during this time Domain: freetext
12. COMMENTS Definition: Comments regarding this equation set and version (entity 3) or these correction values (entity 6) or these hook gage and direct flume measurements (entity 7) Domain: freetext