Based on the available information, there is no specific boat ramp named "East Cove Drive Umber View Heights" in Missouri. It is possible that this boat ramp may be a private or unofficial ramp that is not listed on official websites or maps.

However, there are several boat ramps in Missouri that are located on or near East Cove Drive, which is a street in the town of Kimberling City. One such ramp is the "Kimberling City East Park Ramp" (latitude: 36.635853, longitude: -93.426358), which provides access to Table Rock Lake.

According to the Missouri Department of Conservation, the Kimberling City East Park Ramp is a concrete boat ramp that is 16 feet wide. It is suitable for launching small to medium-sized boats, including fishing boats, ski boats, and pontoons. However, it may not be suitable for larger boats or boats with deep drafts.

Table Rock Lake is a large reservoir located in the Ozark Mountains of southwestern Missouri. It spans more than 43,000 acres and has over 800 miles of shoreline. The lake is a popular destination for boating, fishing, and other water-based activities. It is managed by the U.S. Army Corps of Engineers and is subject to various regulations and restrictions, including speed limits, no-wake zones, and fishing regulations.

In summary, while there is no boat ramp specifically named "East Cove Drive Umber View Heights" in Missouri, there are several ramps in the area that provide access to Table Rock Lake. The Kimberling City East Park Ramp is one such ramp, and it is suitable for small to medium-sized boats. Table Rock Lake is a large reservoir that is popular for boating and fishing.