If the grid spacing of a finite difference 2D groundwater model with a regular grid (Δy = Δx) is halved how wound that affect the truncation error:

If the total volume of runoff from a 1 hour UH is 3000 m³, what is the catchment area (in km²)?

A catchment has three rainfall gauges that have measured the following rainfall - 10mm, 30mm and 20mm. What is the arithmetic mean rainfall?

What is the likelihood in the context of maximum likelihood or Bayesian method for fitting a probabilty distribution?

If you were to draw streamlines by hand would they intersect (or cross) drainage divides?

If the grid spacing of a finite difference 2D groundwater model with a regular grid (Δy = Δx) is halved how wound that affect the truncation error:

What is the probability (as a percentage) that at least one 100 year ARI (1% AEP) event will occur in 50 years?