A favorite precedent of mapping around water was the DC Water Atlas by John Davis, which explored historical waterways and some of the hidden layers of the hydrology of Washington D.C. in an interactive way.  A recent mapping effort, The D.C. Underground Atlas by Elliot Carter takes a slightly different stance and approach, both in content and delivery, augmenting this previous effort and expanding the breadth and the way it is communicated via a series of interactive Story Maps.  The thrill of peeling away perceptual layers of history and infrastructure interests many, which is reinforced from Carter’s introductory text:

“Washington sits atop an interconnected layer cake of transportation, utility, and pedestrian tunnels extending three dimensionally beneath city streets.  Given their importance to daily life in the nation’s capital, it’s surprising to find that the full picture of Washington’s various tunnels remains unpainted. This project aims to complete that picture.”

While the previous effort by Davis was focused specifically on water, the new effort focuses on ‘tunnels’, in the sense that they are accessible.  As mentioned by Carter “In order to limit the scope of the project, “tunnels” are defined as fully walkable passageways – no sewer pipes, culverts, or crawlspaces. All the tunnels depicted can accommodate standing adults, assuming that they have proper access credentials.”  What are included are maps of multiple transportation modes, water, steam and sewer infrastructure, as well as pedestrian tunnels and the specialize subterranean elements supporting the Capitol Mall.

With a short intro page, the interface gives you the option of Maps or Text, each taking your through a narrative with images, text, and maps that shift and zoom and layer additional information to tell a story of each of the particular types of tunnels.  For instance, the Sewer story starts with historical mapping with some information on the early sewage system, and then moves along a timeline, showing early infrastructure and how it evolves into more contemporary systems.

The sequence expands to show, with historical imagery, such as this showing the building of the combined sewer system in 1882 along with the major lines that were built at that time, and more recently a larger scale modern tunneling for new treatment facilities.

Obviously the focus on tunnels gives it a specific scale, and it’s not necessarily capturing the total water story, but showing the amount of subsurface infrastructure that exists, under our feet. The Aqueduct mapping leads more through the path of movement of water from source, with stops at major point, showing how you can adapt the Story Map to fit the particular type of infrastructure, in this case following a path.

For selected categories, the essays are more expansive, such as the breakdown of Aqueduct Tunnels, which expands the spatial narrative with some more rich history.  One of those points is the use, like many other cities, of wooden water pipes, in this case one from around 1810.

A wooden water pipe from Pennsylvania Avenue, installed circa 1810. Photo: Army Corps of Engineers/Public Domain

Another is the great historical images of the brick aqueducts, such as these 9 foot diameter pipes leading to the Dalecarlia Reservoir.

Photograph in Peale album, Washington Aqueduct. PG.66.25.41.

And more diagrams showing cool images of some of the documents, in this case coded to show the type and material of tunnels and their depths as the Tunnel traversed the landscape.  (click to enlarge)

Cross-section of the Lydecker Tunnel topography. The tunnel was advanced via vertical drop shafts at Foundry Branch, Rock Creek Park, Champlain Avenue, and McMillan Reservoir. Illustration: Washington Aqueduct/Public Domain

The story has multiple parts, remnants of abandoned infrastructure as well has a unique quality, such as the Sand Filters near the McMillan reservoir, in which “The underground vaults created their own weather systems when the sand filters were still in use, with internal clouds and condensation”

Photo: NPS/Public Domain

Lots more to explore here for sure, and if your thing is other, non water- types of infrastructure, this has lots and lots of layers.  While the DC Water Atlas, as I pointed out had an exploratory, video-game like quality, this D.C. Underground Atlas has more of a linear spatial narrative that is more direct.  Both have merits in making something that may be less compelling in an essay more engaging an accessible in map format.  As a form of storytelling it’s great, and perhaps the best story comes in the form of daring subsurface navigation, mentioned in the article in CityLab,

“…Carter says the “single most epic Washington tunnel story” might be the adventures of Don Bloch, a Washington Star reporter who wrote for the paper for about a year. In 1934, Bloch convinced the inspector of maintenance at the pumping station to let him cross the city through its sewers for a Sunday feature. Equipped with a flashlight, rubber boots, and a gasmask, he hopped down manholes from street to street, with “cloud watchers” who would warn him if a storm might pose a risk from rising waters. Bloch’s tour guide shoved him in a trunk lid for a ride on the waters leading into Rock Creek. Carter says it might be the “best thing in stunt tunnel journalism Washington has ever produced,” but Bloch’s story remains sort of an enigma to Carter. One of the few details he has been able to verify about him: He co-founded the Speleological Society of the District of Columbia in 1939. No mystery there, it’s not much of a leap from tunnels to caves.”


HEADER: Historical Sanitary System – via D.C. Underground Atlas (www.washingtontunnels.com); this and all images in this post via the site

Last year, I did a review of some of the hidden hydrology of Washington DC showcasing contemporary studies along with a range of historical maps.  Since that post, an amazing mapping project by John Davis (@jnddavis) has launched that’s worth some further examination.

Called the D.C. Water Atlas, the site is hosted by the Dumbarton Oaks, and is summarized as:

“A digital atlas of waterways big and small in Washington, D.C., from the eighteenth century to the present. The online atlas provides a clear sense of the relationship in scale between a city block and the course of an entire river, and facilitates visualizing changes over time in layers or phases.”

A simple blueprint theme provides the foundation for data organized into larger groupings of Aqueduct, Canal, Watefrtont, Watershed, and Sewer. Each of these can be accessed via the navigation or through exploration of the map.  The larger theme maps give a short text description and some dashed boxes highlighting more information such as the aqueduct below (click images to see larger images).

The regional scale makes way for the urban, concentrating on the DC area, in terms of Watefront and Sewer, with a cool rollover method of depicting the growth of the sewer system from the 1870s to 90s.

Or the larger system of water conveyance and reservoirs, including the aqueducts, explained: “The original distribution system, built as part of the construction of the aqueduct itself, served only a relatively small area of the city, as compared to the extent of water service now. Shown as a dashed line on the map, the original water-supply mains prioritized government buildings, such as the Capitol and the White House, and areas of concentrated population, like Georgetown. To ensure adequate pressure throughout the system, and to get water to places that were at higher elevation than downtown, the engineers built a series of “high service” reservoirs in high points around the city. Most have been demolished in modernization efforts. A few fragments of trident-shaped fencing, however, remain in the special collections of the Georgetown Public Library, which was built on the site of one of these domed reservoirs.”

This also expands out into the fringes, to show the reach of water systems in watershed, canal, scales, and aqueducts that connect hinterland with urban center.  The maps below shows the watershed north of the urban area.

Each map contains the ‘Year Depicted’ so there’s continuity of some form of linearity time-wise (most depicting a timeline from the mid-1800’s through early 1900s and later.  There area also some hidden ‘ghosts’ such as a proposed reservoir in the Rock Creek Valley, a dam that could have been as  “…engineers eyed the valley as a convenient site for a water reservoir close to downtown. Luckily for the city’s residents, a group of citizens led by Charles C. Glover urged Congress to purchase the land comprising today’s park, and blocked construction of the dam, which would have inundated a large part of the urban landscape.”

It has the feeling of an exploratory video game, as the opening page was fun to see what emerged, and as you zoomed in on scale, the layers of history was revealed in a nonlinear narrative.  The highlighted sections were cues, but the users

The scale at some times get’s relatively micro, with zoomed area such as the Navy Yard, below, the nested scales working well in revealing significant water system landmarks.

And the Cabin John Bridge, in which “…engineers designed and built a masonry arch bridge to support the aqueduct’s conduit in its course across the valley. This graceful structure, noted for its simplicity of design and elegant form, was the longest single-span masonry arch in North America for nearly one hundred years.”

The extensive bibliography shows a richness of data that can be layered and unified (often a missing piece for critical analysis using sources of different types).  There’s also a complementary essay, in which Davis discusses his take on the digital format in flattening the narrative structure of maps, as well as some methodology, including the pains of digitization and archiving and a switch to open source GIS, and some thoughts on the way we present spatial data.  As Davis mentions, scale is one of the key elements that needs to be considered in representation:

“The Water Atlas, because of extensive processing, does convey a sense of place and space to the structures and landscapes it considers. A combination of cartography and orthographic drawing conventions, the Water Atlas resists the ubiquitous tendency to reduce events, structures, and landscapes to icons. Instead, it portrays these structures as visible at an urban scale, and the drawings reflect the true impact of these structures on the landscape. Though not as fluid and seamless as the Google Maps-powered Panorama, or Leaflet, or Neatline; orthographic, architectural scale drawings convey information at that middle scale necessary for representation and analysis of landscape.”

It’s worth clicking and just exploring and seeing for yourself the layers, often easily discerned and sometimes hidden in the relatively simple interface.  And as Davis mentions, it works at a scale that unlocks stories at a range that seems both comprehensive and accessible.  As mentioned on the Dumbarton Oaks page, the Atlas  “… shows the development of the city’s water infrastructure over time, from large features like canals to the sewer grid and water treatment facilities…” adding “It’s interesting to be able to visualize things that aren’t always apparent when you’re walking around the city,” says John Davis, Tyler fellow in Garden and Landscape Studies. “It’s a totally different conception of how the city works.”

As I compile precedents for my own mapping, this stands out as a really inspiring example of what could be.  The interface isn’t seamless, but in a way that works in a way where you have to dig a little and move around to unearth all of the secrets.  The multi-scalar approach could be adapted to any area and allow for spatial and temporal layering.  I likened it to an exploratory video game, but perhaps it more a metaphor for hidden hydrology, that all is not immediately revealed, and that part of the fun is in the journey.

All images – screen shots taken of the DC Water Atlas.  The footer for the site reads: “This project was completed as part of work for a Tyler Fellowship at Dumbarton Oaks Research Library and Collection, Washington, D.C. Copyright John Davis and the Trustees of Harvard University, 2016. All Rights Reserved.”

The work of David Ramos and his work on the site Imaginary Terrain that includes mapping, tours, and investigations of the hidden rivers of Washington DC.  He comes at the task from the lens of designer, developer, and design educator and mentions: “I’m interested in how long-buried natural systems and historic land use patterns poke their way to the surface, shaping our cities today. I produce maps and lead tours that examine landscape history and planning issues, particularly in the D.C. area.”  This is the point of departure for his work mapping the historic and modern of DC.

tiber   dc   slash

Some earlier maps show the evolution from the mapping of the creeks on the historical map and the modern street network.

1857   modern

Map data is available in a GitHub repository here, and an interactive version of the map is also available to explore in more detail.

interactive-ramos

As mentioned, the bulk of historical mapping data is derived from the Topographical map of the District of Columbia / surveyed in the years 1856 ’57 ’58 & ’59 by Albert Boschke which was published in 1861. It shows the plan for Washington DC as well as extensive outlying areas.

dc_map_topo_small1

This followed the 1857 publication by of the Map of Washington City, District of Columbia, seat of the federal government: respectfully dedicated to the Senate and the House of Representatives of the United States of North America which was a more zoomed in version showing structures of the formal city.

dc_map_seat_small1

These maps are both available via the Library of Congress, which also offers an interesting origin story:

“With the outbreak of hostilities in April 1861, it became necessary to begin preparing the defenses of Washington, DC. In 1857, Albert Boschke, a German born civil engineer, published his Map of Washington City, District of Columbia, seat of the federal government: respectfully dedicated to the Senate and the House of Representatives of the United States of North America which showed, for the first time, the location of every structure in the city as of the publication date.  Following the publication of the 1857 map, Boschke and his surveyors continued surveying the entire District of Columbia, sometimes referred to as the ‘ten mile square’, which resulted in his landmark Topographical map of the District of Columbia / surveyed in the years 1856 ’57 ’58 & ’59. Published in 1861, near the outbreak of the war, this very detailed map showing the locations of all the structures in the city was a potential threat to the security of the entire city, the seat of the federal government. According to an 1894 article by Marcus Baker in the National Geographic Magazine, Boschke sold his interest in the map to the publisher, David McClelland. Shortly after publication, representatives from the War Department seized the original manuscript and copper plates from which the map was published to prevent dissemination of the map.”

I’m also intrigued by one of Ramos’ references, a circular from the late 1970s by the US Geological Survey (USGS) by Garnett P. Williams entitled Washington, D.C.’s Vanishing Springs and Waterways / Geological Survey Circular 752.

usgs-circular

“This paper traces the disappearance or reduction of the many prominent springs and waterways that existed in Washington, D.C. , 200 years ago. The best known springs were the Smith Springs (now under the McMillan Reservoir), the Franklin Park Springs (13th and I Streets, NW.), Gibson ‘s Spring (15th and E Streets, NE.), Caffrey ‘s Spring (Ninth and F Streets, NW.), and the City Spring (C Street between Four and One-Half and Sixth Streets, NW.). Tiber Creek, flowing south to the Capitol and thence westward along Consititution Avenue, joined the Potomac River at 17th Street and Constitution Avenue. In the 1800’s, the Constitution Avenue reach was made into a canal which was used by scows and steamboats up to about 1850. The canal was changed into a covered sewer in the 1870’s, and the only remaining visible surface remnant is the lock-keeper ‘s little stone house at 17th and Constitution Avenue, NW. Because of sedimentation problems and reclamation projects, Rock Creek, the Potomac River , and the Anacostia River are considerably narrower and shallower today than they were in colonial times. For example, the mouth of Rock Creek at one time was a wide, busy ship harbor , which Georgetown used for an extensive foreign trade, and the Potomac River shore originally extended to 17th and Constitution Avenue, NW. (Woodard-USGS)”

usgs-circular_map

The fact that this document was produced by the USGS I am curious what the motivation was, beyond mere historical interest. There is some reference to sedimentation in current creeks, due to development, and the cost of dredging to maintain navigability.  Perhaps worthy of a follow-up post.  Finally, I did find this interesting MLA Thesis from Virginia Tech student Curtis A. Millay, worth checking out: Restoring the Lost Rivers of Washington: Can a city’s hydrologic past inform its future?

millay-thesis2The main question is interesting, and offers potential for how study of historic hydrology can inform future development.

“Can a historically-driven investigation of these buried channels lend credence to the resurrection in some form of a network of surface stormwater channels, separate from the municipal sewage system, to solve the city’s sewage overflow crisis? The following study is an initial exploration of the re-establishment of waterways through Washington with the purpose of improving the current storm sewer overflow dilemma and exploring the potential urban amenities that they could provide as part of a stormwater management plan for the year 2110.”

millay-thesis1

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