Hydraulics & Hydrology

Use this for “A channel 3 m wide carries 5.79 m³/s. Find the critical depth, Eₘᵢₙ, and E at 1.2 m deep.”, or the alternate depth with the same E.

Use this for “Water 0.3 m deep runs at 6 m/s into a hydraulic jump. Find the depth after it and the head lost.”

Use this for “0.1 m³/s of water runs through 500 m of 0.3 m pipe with C = 130. What is the head loss?”

Use this for “0.15 m³/s splits between a 0.3 m pipe 500 m long and a 0.2 m pipe 400 m long (C = 130). Find each flow and the head loss.”

Use this for “Round a loop, K = 200, 300, 200, 400 and the assumed flows are +0.06, +0.03, −0.02, −0.04 m³/s. Find the correction ΔQ.”

Use this for “A 20 ha suburban catchment with C = 0.6 gets a 50 mm/h design storm. What peak flow must the outlet carry?”

Use this for “The longest flow path in a small rural watershed is 3000 ft long and falls 60 ft (slope 0.02). What is its time of concentration?”

Use this for “A pond takes an inflow peak of 3 m³/s and may let out only 1.2 m³/s. Both hydrographs last 2 h. How much must it store?”

Use this for “In what order do you design a storm sewer: peak flow, pipe size, time of concentration, design intensity?”

Use this for “3 m³/s runs full through 40 m of 1.2 m concrete culvert (n = 0.013, kₑ = 0.5) on a 0.01 slope, tailwater 1.5 m. Find the headwater.” Check inlet control too: the higher headwater governs.