Examples
Examples
Try the starting example
- Legs: ID, supplied consumption L, refill-source label after leg or none
- L1,3,Spring L2,2,Tap L3,4,none
- Availability scenarios: name, unavailable source labels joined by | or none
- Normal,none DrySpring,Spring DryAll,Spring|Tap
- Supplied usable carrying volume (L)
- 5
- Minimum modeled initial volume by scenario (L)
- Normal: 3; DrySpring: 5; DryAll: 9
- Largest modeled between-refill requirement by scenario (L)
- Normal: 4; DrySpring: 5; DryAll: 9
- Largest requirement above supplied capacity by scenario (L)
- Normal: 0; DrySpring: 0; DryAll: 4
- Total supplied leg consumption (L)
- 9
- Required departure volume by scenario/leg (L)
- Normal: L1=3 / L2=2 / L3=4; DrySpring: L1=5 / L2=2 / L3=4; DryAll: L1=9 / L2=6 / L3=4
Try another scenario
- Legs: ID, supplied consumption L, refill-source label after leg or none
- L1,3,Spring L2,2,Tap L3,4,none
- Availability scenarios: name, unavailable source labels joined by | or none
- Normal,none DrySpring,Spring DryAll,Spring|Tap
- Supplied usable carrying volume (L)
- 3
- Minimum modeled initial volume by scenario (L)
- Normal: 3; DrySpring: 5; DryAll: 9
- Largest modeled between-refill requirement by scenario (L)
- Normal: 4; DrySpring: 5; DryAll: 9
- Largest requirement above supplied capacity by scenario (L)
- Normal: 1; DrySpring: 2; DryAll: 6
- Total supplied leg consumption (L)
- 9
- Required departure volume by scenario/leg (L)
- Normal: L1=3 / L2=2 / L3=4; DrySpring: L1=5 / L2=2 / L3=4; DryAll: L1=9 / L2=6 / L3=4
Calculation method
Calculation method
Minimum modeled initial volume by scenario (L)
Sum supplied leg consumption through the first available after-leg refill or finish.
Largest modeled between-refill requirement by scenario (L)
For each departure sum through the next available refill or finish, then take the largest segment requirement.
Largest requirement above supplied capacity by scenario (L)
max(0,largest modeled requirement−supplied usable volume).
Total supplied leg consumption (L)
Sum all leg consumption, independent of refill assumptions.
Required departure volume by scenario/leg (L)
Backward-looking requirement to the next declared available refill, not an instruction to carry a health-prescribed amount.
Symbols and units
- a
- Legs: ID, supplied consumption L, refill-source label after leg or none
- b
- Availability scenarios: name, unavailable source labels joined by | or none
- c
- Supplied usable carrying volume (L)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A supplied consumption/refill-availability volume model. Available sources are assumed unlimited under each scenario; this does not predict source reliability, verify water quality, prescribe hydration or assess route safety.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios and rates; all itinerary rates, limits and scenario rules are supplied inputs ↗
Background reading; this does not imply endorsement or independent review of SumFizz.