Answer:
ΔS = 115.5 ac -ft
Explanation:
A = 1260 acres, T = 1 month , I = 36 cfs , O = 30 cfs , P = 4.3 in , G = 1.6 in , E = 5 in
ΔS = I - O + P - G - E
Converted inflow
36 ft³ / s * 1 ac / 43560 ft² * 12 in / 1 ft = 9.9173 x 10 ⁻³
9.9173 x 10 ⁻³ * 3600 s / hr * 24 hr / 1 day * 30 day /month = 12852.89256
25705.78512 * 1 / 1260 acres = 20.40 in
Out flow
30 ft³ / s ⇒ 17.00 in
Replacing
ΔS = 20.40 - 17.0 + 4.3 - 1.6 - 5 = 1.1 in
ΔS = 1.1 in * 1 ft / 12 in = 0.09126
ΔS = 0.09126 * 1260 acres = 115.5 ac -ft
