5. [25 pts] A soil has the following Green-Ampt parameters; K 0.90 cm/hr Effective Porosity 0.39...
2. A soil has the following Horton parameters: fo 2.8 cm/hr fe = 1.0 cm hr kー0.50 l/hr If a constant intensity rainfall of 2.0 cm/hr falls for 10 hours, determine: d. The infiltration rate 20 minutes after the storm starts [10 points] c. The time that runoff begins [10 points] Use tpond equation to get the ponding time
Problem 7.2.a) The Philip and Green-Ampt equations provide models for “infiltration capacity” (or “potential infiltration”). What assumptions are used in the development of the Philip and Green-Ampt infiltration capacity models? Clearly explain the difference between actual infiltration rate and infiltration capacity (potential infiltration). Under what specific conditions are the two the same? b) State the condition that for a given rainfall (or snowmelt) event would never generate infiltration excess runoff. This should be written in terms of the rainfall/melt rate...
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60 1/hr. If a constant intensity rainfall of 1.5 cm/hr falls for 5 hours, model the infiltration rate (f) and cumulative infiltration (F) as a function of time for the entire storm. Use 0.25 hour time increment. Your solution should include the following [35 points: a. A graph of infiltration rate vs. time for zero to five hours. b. A graph of cumulative infiltration vs....