Leland Ryder Lake Dam

BLACK POND BROOK· Putnam, New York· Built 1965· Earth· 21 ft tall
Low Hazard Recreation Private

Key Takeaway

Leland Ryder Lake Dam is classified as low hazard in New York. It was completed in 1965 and is 61 years old. Its primary use is recreation.

Physical Details

Dam Height 21 ft (taller than 61.3% in NY)
Dam Length220 ft
Dam TypeEarth
Max Storage180 acre-ft
Normal Storage140 acre-ft
Surface Area26 acres
Drainage Area2 sq mi
Max Discharge480 cfs
Year Completed1965 (61 years old)
NID IDNY00132

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: May 3, 2012
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

ESTATE OF LELAND RYDER

Private

Nearby Dams

Leland Ryder Recreation Pond Dam

Dutchess, NY

Low Hazard 17 ft

Seven Hills Realty CO INC Dam

Putnam, NY

Low Hazard 15 ft

Ryder Lake Dam

Putnam, NY

Significant Hazard 21 ft

Kiyiwana Farm Pond Dam

Dutchess, NY

Significant Hazard 14 ft

Sagamore Lake Dam

Putnam, NY

Significant Hazard 22 ft

White Pond Dam

Putnam, NY

Significant Hazard 12 ft

Lower Lake Nimham Dam

Putnam, NY

Low Hazard 16 ft

Lower Chia Lin Dam

Dutchess, NY

Significant Hazard 18 ft

Frequently Asked Questions

What is the hazard classification of Leland Ryder Lake Dam?

Leland Ryder Lake Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Leland Ryder Lake Dam?

Leland Ryder Lake Dam is owned by ESTATE OF LELAND RYDER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Leland Ryder Lake Dam built?

Leland Ryder Lake Dam was completed in 1965, making it 61 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Leland Ryder Lake Dam?

Leland Ryder Lake Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Leland Ryder Lake Dam?

Leland Ryder Lake Dam has a dam height of 21 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Leland Ryder Lake Dam last inspected?

Leland Ryder Lake Dam was last inspected on May 3, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.