If an area is covered with water, or if there is saturation to the surface in most years (>50%) for more than 12.5% of the growing season, than the area is definitely a wetland based on hydrology. If water is present for 5–12.5% of the growing season than it may or may not be a wetland depending upon the other parameters (hydrophytic vegetation and hydric soils). Areas with standing water or water saturation to the surface for less than 5% of the growing season will not meet the definition of a wetland. However, unless detailed hydrologic budgets are obtained, which is seldom the case due to time and expense constraints, than these percentages are rarely available. In most cases the delineation process relies upon primary and secondary field indicators.