An accumulation of sand, silt and neglected paperwork have rendered the entrance to Lake Tashmoo impassable at times.

Permitting issues and financial constraints have posed obstacles to long-planned improvements at Lake Tashmoo, but work is now set to be completed by spring.

On a quick swing through the Vineyard Saturday, Lieut. Gov. Karyn Polito visited the Tashmoo boat landing where a state-funded overhaul is slated to begin this fall.

The Seaport Economic Council this week awarded $680,000 to the town of Tisbury for a long-planned overhaul of the Lake Tashmoo landing ramp. It was the second largest grant in a $5 million package.

No dragging will be allowed in Lake Tashmoo for the scallop season this year.

Tisbury selectman have designated Drew’s Cove in Lake Tashmoo a no-anchoring zone for an indefinite period of time to protect fragile eelgrass beds near the head of the saltwater estuary.