Flood, McCurtain
- When
- May 5, 12:00 PM CST to May 31, 11:59 PM CST
- Where
- McCurtain County, 2.44 mi ESE of Sherwood to 8.28 mi N of Broken Bow
- Cause
- Heavy Rain
- Reported by
- River/Stream Gage
- Coordinates
- 34.312, -94.743
Excessive heavy rainfall during the month of May resulted in very high water in the Mountain Fork Little River Basin which feeds the Red River flood control reservoir know as Broken Bow Lake in McCurtain County, Oklahoma. The lake remained very high throughout almost the entire month of May, 2015 and the lake set an all time pool stage record of 628.74 feet at 5 pm on May 25th, 2015.
A major flood developed on the Mountain Fork River on May 25th. As Broken Bow Lake reached the top of the flood control pool stage at 627.50 feet during the evening of May 24th, releases were rapidly ramped up to 28,000 CFS to lower the reservoir during the 25th. Very rapid rises developed on the Mountain Fork Little River below the Broken Bow Lake Dam. The gauging station west of Eagletown, Oklahoma was damaged early in the event so only high water mark data was available for a crest value on the river. Based on the rating curve, the Mountain Fork probably crested near 15 feet at the Eagletown gauging station, a crest not seen since before the completion and operation of the Broken Bow Dam in October of 1968. Major flooding continued on the lower Mountain Fork Little River during Memorial Day and May 26th, 2015 with stages not seen in over 50 years. A cabin housing ten adults and three children on vacation was completely cut off by the high water along with high water approaching the cabin. The McCurtain County Sheriff's Office attempted to reach the vacationers with a jet boat three times but the swift current prevented a boat rescue. After the third boat rescue attempt, law enforcement brought in a helicopter from the Oklahoma National Guard and the cabin's occupants were airlifted from the cabin.
The lower Mountain Fork Little River flooding resulted in extensive damage to the Beaver Bend State Park, a nationally known vacation and nature area. Oklahoma Hwy. 259A was completely scoured down to the rock by eroding away the pavement and underlying base roadbed. The bridge, while not destroyed, required extensive rehabilitation. The marina located on the lake suffered damage from the high pool stage as well.