1911 White Rock Dam on White Rock Creek in Dallas, TX

(Satellite)

Like many dams in Texas and Oklahoma, this dam was built for a water supply.

When I looked at photos of the spillway, I was confused because it looked like there were two different spillways. These aerial photos show that there are two different spillways --- a one at the edge of the lake and another one downstream before Garland Road.

[I lost the credit.]

[I lost the credit.]

Historic Texas USA posted
Spillway Under Construction at White Rock Lake, Dallas (1911)
[The description continues with some platitudes.]
DallasASACE
When Lake Lewisville was built in 1930, the land around this lake was transferred to the parks department. A swimming beach was built. Because of a severe drought, the lake was transferred back to the water department in 1952 and swimming was outlawed. The pump station remained in use until 1964.
The lake was dredged in 1937, 55, 74 and 98. They are in the midst of a feasibility study (accessed Dec 2025) to determine if it should be dredged again.

The "earth-fill structure [is] approximately 2,100 feet [640m] in length and 40 feet [12m] in height." The spillway is 450' (45.7m) wide. [twdb]

This photo catches the upper spillway passing water. I wonder what the workers are doing in the middle of the photo.

Youssef Almkari, Jul 2021

The lower spillway passing water. 

matt karmil, May 2021

Were the workers in the upper-spillway photo above adding these two outlets?

Chad Meis, Jun 2025

A strong flow over the upper spillway.

Marcus Tovar, Apr 2021 [I lost the link]

And a view of the upper spillway from the parking lot.

Poovalagan Jagadeeswaran, Apr 2024

Another view of the lower spillway. Part of the upper spillway is in the right background.

 Paul Samrane, Mar 2019

The earth-filled part of the dam taken from the edge of the upper spillway. The smokestack is part of the pump house that is at the end of the dam.

Joan J, May 2025

Michael Kleiman, May 2025

3:17 video
History of White Rock Lake | Dallas, TX

2026 Leon Hurse Dam and Lake Ralph Hall near Ladonia, TX

(Satellite, the dam is still being built.)

Heavy Lift Productions post
Future lake under way in Texas

Frank Etier: Good looking pump station in the back ground.

Cody Emma Curtis commented on the above post
That's my job i run the Kobelco 1600

I wonder how many fossils are in the Fossil Park and how do they relocate them? I don't think you can use an excavator and dump trucks because you would bust a bunch of fossils.

LakeRalphHall

It looks like some strip mined land is being covered up. That is no loss.

It turns out, they are not moving fossils. They are just letting people dig in a different fossil bed. [LakeRalphHall_fossil]

Satellite

LakeRalphHall_reservoir
The dam will be approximately 2.3 miles (3.7km).

LakeRalphHall_reservoir
The pumping station will initially move 45m gallons per day, and eventually it will do 80mgd.

1892 Road/N&W Dingess Tunnel at Ghost Town Dingess, WV

North Portal: (Satellite)

North Portal:

Street View, Jul 2023

South Portal:

Street View, Jul 2023

No kidding about yielding to traffic that is already in the tunnel. I guess, since the tunnel is straight, you can see if a vehicle is already coming to you. I'd be sure to turn on my headlights even though the tunnel is well lit so others could see that I'm in the tunnel. In fact, when I checked out the sign on the left, it reads "CHECK HEADLIGHTS."

Street View, Jul 2023

Rebecca Campbell, Oct 2023

Stones Austine posted
The Dingess Tunnel in Mingo County as it was being constructed.

Joe Daugherty: STONE MASONS FROM ITALY , REAL STONE CUTTING , maul haul bone masons

1894,1907 CNYK/NS/Erie Bridge over Lackawaxen River in Lackawaxen, PA

(Archived Bridge Hunter; Bridge Hunter; Historic Bridges; HAER; Satellite)

CNYK = Central New York

Street View, Aug 2024

HistoricBridges
The 591' (180m) long bridge has a main span of 132.6' (40.4m).
"This bridge is a great example of how railroads would alter bridges (both long ago and more recently) to accommodate increasing loads and increased deterioration. First, the original 1894 bridge was altered in 1907. This is discussed in the HAER documentation. More recently additional alterations and repairs have been made, and are easy to spot on the bridge as they have a brighter orange rust color in the photos."

Dave Schnitzler shared three photos with the comment: "If folks out there have any photos of the EL in and around the Masthope/Lackawaxen, PA environs it would be greatly appreciated if you could post a few.  My recollection is that many of the trains going by the cabin in Masthope were toting piggyback trailers on flatcars.  Here are a few recent pix of the bridge crossing the Lackawaxen river just adjacent to the Delaware."

1

2

3

I found only the third photo on HAER.

HistoricBridges

1945 50mw Alder Dam on Nisqually River near Eatonville, WA

(Satellite)

Note that the spillway is off to the side in the background of this photo.

K Grimm, Sep 2023

Dec 2025 Flood:

Facebook Reel

Google search results [I could not find a link to the page that sourced this photo.]

The dam is 285' (87m) above the riverbed and 330' (101m) above bedrock. It is 1,600' (488m) long. It has two 25mw generators. [mytpu]

EatonvilleToRainier
Construction in 1944.

Russ Kurkov, Jul 2021

The dam does have an outlet works.

angel kaiz, Jun 2019

1939 75mw Claytor Dam on New River near Radford, VA

(Satellite)

Jamie Henley, Apr 2020

Facebook Reel

ClaytorHydro

ClaytorHydro_about
"Construction of the left abutment of Claytor Dam, 1938. Dam workers are standing on the future spillway basin.  Note the extensive form work which would have required gifted carpentry skills.  Imprints of the wooden forms remain today."
"All four turbines are of the Francis type rated at 26,000 horsepower and directly connected to four AC generators rated at 18,750 kW. The total installed capacity of the Project is 75MW. The total hydraulic capacity of the Project turbines is 10,000 cfs."

ClaytorHydro_about

1968 300mw Mossyrock Dam on Cowlitz River creates Riffe Lake near Mount Rainier, WAS

(Satellite)

Dec 2025 Flood

Dec 15, 2025:

Facebook Reel

Four days later, they still are not using the fourth gate.

Facebook Reel

Keith Carrol, Jul 2020

This double curvature arch dam is 365' [111m] above riverbed and 606' [185m] above bedrock. [mytpu]

Each unit is 150mw.

8:14 video @ 9:45
Learn about how we rebuilt the Mossyrock powerhouse generators.

This video must have been taken around 2010. The lake level was lowered in 2017 because seismic issues were discovered. It will be at least until 2031 before they can fix the issues and restore the lake level. [mytpu_whoops] In the meantime, they can't make full use of those new generators.

@ 8:14

I wonder if the Dec 2025 rains would have caused serious problems if the lake had not been lowered because of seismic  issues. It is a shame they have to dump the water quickly rather than let it drain through the generators.

The Chronicle posted 0:26 video

Water cascades through three of the Mossyrock Dam's four spillways as Tacoma Power staff slowly drain a swelled Riffe Lake following last week's atmospheric river event.

According to the National Oceanic and Atmospheric Administration's (NOAA) lake level gauge, Riffe Lake's level is currently at 755.93 feet. From Dec. 7 through Dec. 14 during the storms, the level rose from around 720 feet up to almost 760 feet.

Video by Chronicle reporter Owen Sexton.

1898,1994 Glimmer Glass Bridge near Manasquan Inlet at Brielle, NJ

(Archived Bridge Hunter; Bridge Hunter; Historic Bridges; Satellite)

I classified this as a trunnion bridge because the span does pivot on a trunnion. But I added the label "bridgeRare" because it doesn't use the usual counterweight design.

Metrotrails posted

The Glimmer Glass Drawbridge is one of the only counterweight draw bridges of it's kind, located near the Manasquan Inlet, a section known as the "Glimmer Glass" at the Jersey Shore.

The cable lift Bascule bridge featuring rolling counterweight design was built in 1898, and may be the only surviving bridge of its kind in the eastern US.

The Glimmer Glass is a navigable, tidal channel of the Manasquan River between Manasquan and Brielle, Monmouth County NJ.

Metrotrails shared

Street View, Feb 2022

Street View, Aug 2017

Street View, Feb 2022

2009 Ben Eriksen Flickr via Bridge Hunter, License: Creative Commons Attribution-NonCommercial (CC BY-NC) 
"A VERY Tight Fit"

HistoricBridges, Photo credit: Elaine Deutsch, 2016
"Bridge Status: At risk for demolition and replacement."
The 279' (85m) long bridge has a movable span of 34' (10.4m).
"This is the last known surviving example of a Belidor type bascule bridge in the country. Despite never being common here, this bascule type was also built in Australia where they called it the 'American' type of bascule bridge which is ironic since the type is nearly extinct in the United States today."

He doesn't fly the drone on the other side where we would have a clear view of the curved ramp.

Photography By Gregory Coraggio 5:29 drone video via HistoricBridges

The 17-span bridge is composed of 16 timber stringer spans supported on braced timber pile bents and a 31'-long cable lift bascule rolling counterweight movable span. The single-leaf movable span is a deck girder with an open steel grid deck installed in 1962. A cable attached to each side of the toe end of the movable leaf passes over a single-track sheave atop the braced timber tower columns with braced curved tracks on the side opposite the movable leaf. The opposite end of the cable is attached to a connecting hanger that joins the shafts of the rolling counterweights positioned in series on the track. The two topmost metal counterweights have a solid center guide while the last one has disk guides. The track has built up wood end stops. The tower columns are braced with wood struts on the sides and wire rope stays on the back. The toe lock is manual. The bridge is controlled from an operators house on the upstream side. An electric motor mounted atop the upstream tower column brace engages the drive shaft to turn the sheaves which cause the counterweights to start moving down the track. The motor reverses the action to close the bridge. The operators house, like many elements of the bridge, has been upgraded over the years, but its function and profile are original.

History: Bascule span installed 1938; bridge modified in 1949-50, 1957-58, 1963, and 1971

[ArchivedBridgeHunter]