problem with my graph

[Siti murni]

hi i have problem with my graph and my lookup table. i need a graph of water inflow is increasing. i already use many ways but it doesn't work..can i have your opinion here.
i have attach my model here
thankyou in advanced

[tomfid]

I find some variances between your variables and your units.

For example, I would expect "wastewater collected" to be a physical measure in liters/month, but it's dmnl. What does that mean?

Similarly, "water stored in dam" seems like an arbitrary transformation with unphysical units.

It seems like "water inflow" should be rain + wastewater reused, not rain*wastewater reused.

[Siti murni]

then how about watersupply - wastewater collected - ratio - lookup table% collected - wasterwater treated.. should i delete that should i still use?

[tomfid]

The wastewater collected variable seems OK, it's just the "water in dam" concept that seems to have no physical meaning.

I would expect something like:

wastewater collected = water supply * fraction water collected