Radnor Lake State Park

Radnor-lake-observation-deck pix by s


Canoe Floats

Between Memorial Day and Labor Day, the ranger staff at Radnor Lake offer interpretive canoe floats 3-4 times weekly. These floats are approximately 1-2 hours in length, require registration and are offered at no cost to park visitors. Paddles, life jackets and canoes are provided by the park staff. No private boats are permitted at anytime. Canoe Floats are not offered between Labor Day and Memorial Day due to waterfowl migration and/or impact upon wildlife observation.   

Scheduled floats will vary in time of day and days of the week to ensure we offer this experience for all of our park visitors. However, most floats during the summer months are at sunrise and sunset hours due to heat and increased wildlife viewing opportunities for visitors on the floats. Rangers leading the float will stop periodically to view wildlife, discuss the history of the lake and/or to discuss land acquisition projects occurring with Friends of Radnor Lake. 

For more information on canoe floats at Radnor Lake, please see our monthly program schedule beginning on Memorial Day Weekend thru Labor Day Weekend. 

Barbara J. Mapp Aviary Education Center

7:00 AM to 1:00 PM - Wednesdays 
1:00 PM to Sunset - Saturdays 

There’s a new destination at Radnor Lake and it’s really for the birds. Constructed as a boardwalk, nestled in the natural area, the wheelchair accessible facility provides educational programs, allows up-close observation of non-releasable birds of prey, and offers a bird’s eye view of the surrounding hillside and wildlife. In addition, interpretive displays on venomous snakes, non-venomous snakes and turtles are available inside the main building. The nearby amphitheater provides outdoor seating for our ranger-led educational programs.

To minimize stress on the captive birds at the aviary, initial public hours are limited to a two-day-a-week schedule. In addition, pets are not permitted on the boardwalk at the Barbara J. Mapp Aviary Education Center. The aviary center opened on May 2nd, 2015 and is now open two days a week.


The Barbara J. Mapp Aviary Education Center is located at the top of Hall Drive, off of Otter Creek Rd.  
From East Parking Area, walk west on Otter Creek Road to Hall Drive to Aviary- 3/4 of a mile.
From West Parking Area (Walter Criley Visitor Center), walk east on Otter Creek Road to Hall Drive to Aviary is 1.4 miles. The hike up to Hall Drive is paved but steep.

Aviary Project Update

The Barbara J. Mapp Aviary Education Center project consists of two phases.

  • Phase I – 550 foot boardwalk and five pens that will be home to four non-flighted raptors and one non-flighted American Bald Eagle. Phase I is complete thanks to a recent $50,000 matching grant from Barbara J. Mapp Foundation and many generous donors.
  • Phase II – a netted Eagle aviary that will house two flighted American Bald Eagles. Friends of Radnor Lake is actively fundraising by seeking grants, corporate partners and private donations to raise the final $100,000 to complete the Eagle Aviary, and related education programs and materials. 


From November – April, a diversity of wintering waterfowl or transients can be easily viewed from anywhere along Otter Creek Road. Diving ducks such as Ring-necked and Canvasback are best seen near the center to west side of the lake, while marsh ducks such as Gadwall and American Widgeon prefer the shallower east end and the Big Slough. Observation decks are located along Otter Creek Road and along the Lake Trail. During spring and fall migration, birding the oak-hickory woods is popular and easiest along Otter Creek Road, the dam, Lake Trail and old caretaker residence.


Otter Creek Road — 1.1 Miles — Paved — ADA Accessable
Lake Trail — 1.3 Miles — Mulch/ Gravel — Easy
Ganier Ridge Trail — 1.6 Miles — Natural — Difficult
Access Trail — 0.2 Miles — Mulch — Moderate
Dam Walkway — 0.2 Miles — Gravel — ADA Accessible
Spillway Trail — 0.3 Miles — Mulch — Easy
Valve House Trail — 0.2 Miles — Mulch — Easy
South Lake — 0.9 Miles — Mulch — Moderate
South Cove — 1.3 Miles — Mulch — Difficult
Hall Drive — 0.4 Miles — Paved — Moderate