@Laura McMullen the first recommendation on a forum like this is to include some minimal exemplary code of yours to clarify the issue. Otherwise it is very hard to understand what do you need. Fro instance, you say:
Basically I want the Input to say, "What is the magnitude (cfs) of flood number ...." and then say 1, 2, 3, 4 etc.
But that is exactly what Input function documentation says how to do in first examples. Putting that in a loop:
Alternatively you could follow @Nasser M. Abbasi advice and use interface functionality:
Manipulate[x, {{x, .3, "Desnity"}, 0, 1, Appearance -> "Open"}]
Manipulate[x, {{x, .3, "Type value"}, 0, 1, InputField}]