This section is basically saying that the rules in this chapter apply when interpreting the wider division, unless it's clear that a different interpretation is needed.

This law means that when a word is defined in a particular way, any variations of that word will carry the same definition.

This section defines the term "District" as referring to any county irrigation district or county waterworks district that has been established according to the County Waterworks District Act or this division.

This section defines the term "Board" as the governing body of a district.

This law defines the term "County" as the specific county where a district or potential district exists.