RFI - Appendix 5 - Water Managment Plan · MCU19/0117

Appendix B: 5% Driest Rainfall & Evaporation Rates




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engineers & project managers

Appendix B: 5% Driest Rainfall & Evaporation Rates

 

NOOSA NORTH SHORE WAVE POOL - WATER LEVEL MANAGEMENT
Location Noosa Heads, QL, AUS
DataSource http:/Awww.bom.gov.au/watl/evaporation/ . "
hittp:/ Awww.bom.gov.au/jsp/ncc/climate_averages/rainfall/indexjsp engineers & project managers
Sth %ile
SurfPool Area (m2) 4,000 Monthly
Annual Jan Feb Ma Apr May Jun Jul Aug Sep Oct Nov Dec
Evaporation (mm) 1,300 150 150 125 8 50 50 8 80 100 125 125 150
Evaporation (L) 5,200,000 600,000 600,000 500,000 320,000 200,000 200000 320,000 320,000 400,000 500,000 500,000 600,000
5% Rainfall (mm) 1,090 as 10 412 94.1 333 48.8 B7 22 1 39 22.4 12 32
Rainfall (L) 4,360,000 40,000 164,800 376,400 133,200 195,200 94,800 8,800 4,000 15,600 89,600 48,000 128,000
Net Rain(+)/Evap(-) ** -840,000 (_) -560,000 ~435,200 -123,600 -186,800 4,800 -105,200 -311,200 -316,000 -384,400 ~410,400 -452000 ~472,000
(varies monthly)
Less Operational Tolerance 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000 400,000
cumulative shortfall (Oct-Feb)
Shortfall = -329,600 litres -160,000 -35,200 -10,400 -52,000 -72,000

** note annual is not total of individual months but represents the 5%ile annual figure
** Does not take into account losses from: filtration backwash; bather splash or carry-out; and, airborn mist created from breaking waves.

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