CREST Version 3.x

Note

CREST V3.x, on top of V2.x, adds a conceptual groundwater module, hoping to extend CREST model capacity in simulatng groundwater-fed streams.

Figure 2. CREST V3.x model structure

Table 1. CREST V3.x parameters table

Symbols	Description	Source	Unit
DEM	Digital Elevation Model	Remote sensing/survey	M
FDIR	Flow direction	Derive from DEM	N/A
FAC	Flow Accumulation	Derive from DEM	Cells or km^2
S	Slope	Derive from DEM	Degree
l	Distance between cells	Derive from DEM	M
Wm	Maximum soil water capacity at bulk soil layer	Soil survey	mm
b	Exponent parameter of the VIC model at bulk soil layer	Soil survey	N/A
Ksat	Mean saturated hydraulic conductivity	Soil survey	mm/hr
GWE	Exponent of the groundwater bucket	calibration or prior knowledge	N/A
GWC	Coefficient of the groundwater bucket	calibration or prior knowledge	N/A
Zgwmax	Aquifer depth	Geography survey	m
KF	Surface runoff velocity coefficient	N/A	m/s
KS	Subsurface runoff velocity coefficient	N/A	m/s

Author:

Zhi Li, Shang Gao, Mengye Chen, Yang Hong

Year of publication:

2021

Software repo:

Github

Program language:

C++