Page 165 - CIWA Water Data Revolution Overview Report

available water, managed water use, utilizable flows, non-utilizable outflows, reserved
outflows, and non-consumed water.

Table 1. List of hydrological variables and indicators quantified in the water accounting framework.
No Flux/Indicators Description Equation
1 P advection Precipitation received in the basin, 12
aggregated over the hydrologic year ∑
=1

2 Basin inflow Surface water or groundwater and (Measured
(interbasin diverted into the basin estimates)
transfer)

3 Gross Inflow, Total inflow from all sources + +
GI
4 Change in the See equation 2. See equation 2.
soil moisture,
ΔSM
5 Net Inflow, e gross inflow plus the change in ± ∆
Th
NI soil moisture
6 ET rainfall, ETa that occurs from effective
ETrain precipitation and canopy interception, ∑
summarized for all land cover classes =1
(1 to n classes).
7 ET incremental, ETa that occurs from other sources
ETincr except effective precipitation and ∑
interception. Includes ET from =1
irrigation water, groundwater
abstraction, open water sources,