Drainage: ~117 sq.mi.

Drainage area at our listed put-in is approximately 117 sq.mi. (as calculated via USGS StreamStats Beta software).

Two relatively nearest USGS gauges might be used to approsimate flows here.

Mill Ck nr Mottville gauge lists 43.5 sq.mi. drainge, so flow in Christiana could be about 2.69 (or ~2 2/3) times the Mill Creek reading.

Elkhart R at Goshen gauge lists 594 sq.mi. drainge, so Christiana could be 0.197 times (or just under 1/5th) the Elkhart R at Goshen gauge reading.

(An average of the above two gauge calculations might be a most meaningful value, but all of these are still merely approximations.)