The metropolis

Washington and its environs have always been a cynosure for American

eyes, a place people have wanted to be proud of and have fought to keep

"right." Many of its defenders have been powers in the land, and for a

long time in the past the battle was generally a winning one. Even aside

from the city's planned monumental Federal center with its government

buildings, memorials, formal parks, malls and avenues--largely traceable

to the ideas of Pierre L'Enfant and the sporadic respect paid them by

the founding fathers--it has amenities undreamed of in and around most

American cities: things like the Potomac Great Falls and gorge with the

C. & O. Canal alongside, Arlington Cemetery, Mount Vernon, the

Georgetown neighborhood where private taste and determination have

brought a near-slum back to 18th-century grace and function, Roosevelt

Island, several fine local and regional parks, the George Washington

Memorial Parkway along the Potomac, and incredible Rock Creek winding

down its natural valley through the Maryland suburbs and the District to

the river.

[Illustration]

Yet the rampaging growth to which the metropolis, in common with other

American centers of population, has been subject during the past two or

three decades means not only that these pleasant places are being

pressed upon by many more people than anyone thought they would ever

have to serve, but also that some of them are in danger of destruction

or irreparable damage, and the tone of the city as a whole has been

changing for the worse. The once magnificent upper estuary, as we have

seen, is afflicted with complex and ugly pollution that shuts it off

from the pleasant use it might otherwise sustain, and makes it a

detraction from the Federal splendor along its northern shore rather

than the enhancement it used to be. In places like the Alexandria and

Georgetown waterfronts, industrial dilapidation on the shorelines more

appropriately matches that pollution in mood, and on the Virginia side

here and there undistinguished, often jerrybuilt highrise clutter has

taken the place of the calm and wooded hills toward which the capital

city once could look.

Parks and open areas within the metropolis and out from it are often

crowded, trampled, and belittered during most times when people can get

away from making a living to visit them, and thus can furnish only a

little of the quiet and elbow room that might be their main contribution

to urban peace of mind. They are also subject to pressure and often

damage from outside, stemming from the economics, the politics, the

governing mood of restless growth. The blowtorch roar and black oily

exhaust of jet airliners coming and going at National Airport, for

instance, diminish and cheapen all the green space and monumental beauty

so purposefully arranged along the Potomac shore. And only the

bitterest kind of fight can occasionally save a park or a stream valley

or the river itself from a projected addition to the spaghetti network

of freeways and beltways and bridges and other high-use traffic channels

along which flow swirling, never-ending currents of cars. Or from

standard suburban development.

Rock Creek is a complex example of how the city threatens its own

amenities. We have glanced at it already--polluted by casual spurts and

dribbles of waste from hundreds of thousands of people, its basic

hydrology and therefore its very existence as a stream dependent on the

proper use of the rural upper third of its watershed. For it has already

suffered the loss of many tributary runs and branches in the lower

two-thirds during the process of solid development.

In 1966, the critical upper third of the Rock Creek basin was very

nearly turned over to suburban developers as a playground for bulldozers

by a lame-duck Montgomery County Council on a rezoning spree. When

protests against these actions, as well as against the general

degradation of the stream, culminated in the issuance of our report The

Creek and the City and then in a public meeting under INCOPOT auspices,

people who had long been fighting the Creek's battle became the nucleus

of a revived public effort. It now appears that under a new Council the

upper watershed may be developed in some accordance with the

Maryland-National Capital Park and Planning Commission's protective plan

for the area, so as to keep much of its surface covered with the grasses

and humus through which rainwater percolates underground into aquifers

that feed the creek through dry periods, and with some safeguards

against the customary terrific siltation that careless development

produces. And pressure has been generated to deal with the creek's other

pollution, which is certain to be a long and laborious job.

[Illustration]

Suburbanization itself is based in social forces, and this is not a

sociological report. The knotted, often bitter, sometimes violent tone

of contemporary American cities does not come within our province, but

some consideration of it is inevitable. Not only must any planning for a

decent environment--like planning for water use--take into account the

needs and interest of the majority of the Basin's citizens who live in

and around Washington, but it needs to be based in some understanding of

the way they are. For in part the way they are is what determines the

pattern of urban growth and much of the restless shifting and wandering

that makes the city's people a strong influence to the limits of the

Basin and beyond. In part also, however, the pattern of urban growth

makes the people the way they are--it has been observed, for instance,

that if suburban Americans were better satisfied with their manner of

life, they probably would not spend so much of their time in automobiles

getting away from it.

[Illustration]

Within Washington itself, children may be born to erstwhile rural

parents and may come to adult years with only a scant sense of the

peace and beauty that can be found a few miles away, and often with

little sense of anything else but the crumbling, teeming, stifling,

noisy, sooty slums where they live--the other side of the monumental

splendor along the Federal riverfront. Not all urban frustration is an

outgrowth of the physical environment by any means, but much is. And

this frustration, plus the pattern of exodus for some and sour jammed

imprisonment for the rest, has within the past few years been killing

off one by one all the special satisfactions and delights that cities

from time immemorial have furnished their inhabitants.

[Illustration:

This 26 square-mile section of the Rock Creek watershed, just above the

District line in Maryland, was rural in 1913, with many small

tributaries fed by springs and seeps. Ensuing development based on

little knowledge of natural processes covered most of the old aquifer

recharge areas with pavements and rooftops, so that more precipitation

ran rapidly off the land instead of soaking in and flowing out gradually

into streams. Flooding during storms and loss of flow at other times

caused most of the tributaries to be covered over as storm sewers, so

that out of 64 miles of natural flowing stream channels that existed in

1913 in this section, only 27 miles can be found above ground today.]

Fleeing the dissonant center--or avoiding it from the start when they

move to the metropolis from elsewhere--citizens who can afford it move

into suburbs carved in the outlying countryside by gargantuan machinery,

sometimes in compliance with a plan that preserves some trees and airy

open space and a sense of the things that were, but more usually not.

Here the fugitives place themselves one against the other in the

hugeness of their numbers so that very quickly in many places the

countryside hardly exists except in leapfrogged forlorn patches or

farther out, where its ownership in speculatively held blocks--the old

farm houses gone to pot, their fields in weeds or casually tilled or

grazed to merit agricultural taxation--avouches the certainty of

continuing sprawl. It is a much-documented process with two decades of

history behind it now. It is cancerlike in its effect on the region, and

disillusioning in its effect on many of those who participate, for

often it forces them into the position of being mass destroyers of the

very things they seek--air and wild greenery, quietness and the elbow

room to be themselves.

[Illustration]

A growing body of knowledge as to what kind of terrain can stand dense

development, and what kind cannot, and how streams and woods and

wildlife and even farms can be physically retained among urban

populations, and why they ought to be, is becoming available. Its

principles are more or less ecological, which simply means that they

seek to maintain right uses of different elements of the landscape under

urban conditions, in order that these elements may function with a

reasonable degree of naturalness, remain compatible with one another and

with human purposes, and be available for people's enjoyment. Flood

plains make good hay fields or parks, for instance, but poor sites for

homes or shopping centers. Porous areas that recharge aquifers ought to

be kept as much as possible under vegetation rather than pavements or

buildings, if people are to have streams later and not capricious drains

that are better off covered over. Steep slopes, if carved severely,

usually exact a later revenge. House clusters and townhouses and

apartments rightly spaced and located can let the country function even

while settling on it numbers of people equivalent to those who would be

there if it were hacked into a solid expanse of tiny lots. And so on.

Much remains to be learned if the application of these principles is to

be ideal. For example, urban hydrology--precisely what happens to the

water cycle during various kinds of development, and how it might be

adjusted--is a relatively new branch of study and still needs much

research. But even with present knowledge, great improvement over

present patterns is possible. In the hands of a few emerging experts,

planning which pays attention to soils and topography and climate and

special landscape features and values can be a subtle art, prescribing

villages and farms and factories in the right places, making the most of

native vegetation and views and places where George Washington slept and

the breezes of July. Its form on a map tends toward curved lines rather

than the orderly straight ones abhorred by nature.

Yet in one simple form, this kind of land use planning has been

practiced for many years in rural America by millions of farmers, who

have cooperated with one another to their own mutual benefit in soil

conservation programs to reduce erosion and to slow down the wasteful

and destructive runoff of precipitation. We noted earlier a pilot urban

adaptation of such programs on Pohick Creek on the metropolitan fringe

in Virginia, where an effort is being made to develop a whole stream

basin in accord with soil conservation principles, not only to avoid

future flood damages and sedimentation and pollution but to retain

natural areas, living streams, and many of the other features the land

had before the city engulfed it. Even with the gaps in present knowledge

and the probability that developers and builders are not going to

cooperate as fully and eagerly as farmers, it offers much hope. For it

may well betide a time when urban planners in general will have the

vision and authority, together with the reinforced knowledge, to subject

all new development to its basic guiding precept--a respect for the way

the landscape works. It is getting to be far more possible now than it

was in the past to say, in relation to a given place: "This is how

development ought to proceed."

In the ring of counties nearest Washington, all of them much lacerated

by sprawl that has been gobbling up some 24,000 acres of peripheral

countryside each year, respect for the way the vanishing landscape works

has been growing by leaps and bounds. The authority to translate it into

good practices, however, is much hampered by the complexities of

metropolitan reality. Officially endorsed plans exist for these

counties, or for parts of them, which show quite a lot of regard for

soils and topography and their appropriate use. But frequently these

plans are of necessity a mass of compromises. They have had to be

adjusted drastically to fit in with existing development, road networks,

sewage lines, and such things, which seldom are located in accordance

with an ecological ideal. They are encrusted with concepts from older

plans not based in landscape principles. Differing views or interests on

opposite sides of municipal or county boundary lines may gut them. Money

to buy needed open space--the only way to ensure its protection--is

usually short. And legal institutions that ought to be on the side of

good planning sometimes get in its way.

Zoning, for example, is an indispensable tool for implementing planning,

but too weak for some metropolitan situations and often too inflexible

to meet certain needs. If essential open space has been protected only

by zoning, astronomical increases in its speculative value may generate

enough pressure on zoning boards to change the category, as happened

last year on upper Rock Creek. This is particularly true in view of

metropolitan plans' inevitably hodgepodge nature, which makes them

somewhat arbitrary and vulnerable to attack. Bribery and

personal-interest scandals often are rooted in zoning matters.

Furthermore, residential zoning of the standard minimum-lot-size sort,

not adapted to cluster housing and such sophistications, may actually

encourage sprawl and rectilinear violation of the landscape by

restricting the density of people in a place where the density of

buildings and pavements is what really matters.

[Illustration: THE HYDROLOGIC CYCLE]

Tax systems can be troublesome in various ways--discouraging public

purchase of needed parks or conservation areas because officials don't

want the land to go off the tax rolls, preventing renewal of blighted

areas by penalizing improvements, running farms out of business by

taxing their fields as subdivision land, promoting leapfrogging and

sprawl (in the case of Federal capital gains taxation) by rewarding

speculative retention of tracts. And other government programs and

policies at various levels work against good planning or have done so in

the past, either by failing to encourage good types of land use or by

actively promoting bad types. Traditional Federal mortgage insurance and

home loan practices oriented toward standard suburban development are an

example, and so are many highways and roads subsidized and routed by

experts in higher realms of government.

With so much economic and legal muscle arrayed on the side of chaos and

a whole army of enterprising folk dedicated to its perpetuation--some

holding seats on planning and zoning bodies--the wonder is that the

metropolitan counties have been making any headway at all with improving

their planning process. And they have been, especially since they have

begun to work together in such organizations as the Metropolitan

Washington Council of Government. But, as elsewhere throughout America,

the progress is somewhat dwarfed by the population pressures and

untrammeled expansionism planning must deal with. Radical measures may

be needed; there has been sober talk of counties' issuing bonds,

condemning all vacant land within a wide radius of the city, and buying

it up for gradual resale and development in an orderly and sensible way,

thus eliminating at one stroke the speculative pressures and torsions

that are the root cause of much of the trouble.

For under metropolitan conditions fee ownership, either of land or of

its development rights, seems to give the only certainty of control over

land's use. Obviously its potential employment by government is limited

in a free economy, and such things as zoning and subdivision

controls--strengthened and made rational--are going to have to continue

as main tools, together with devices like scenic easements, which

usually, however, again involve a form of purchase.

Fee ownership is the kind of control that is being exercised--by private

interests rather than by government--in the promising "new towns," where

certain individuals and groups are attempting to use industrial-type,

long-term financing in the purchase and development of large tracts on

which strong and careful planning, involving everything from industry to

fish ponds, can be enforced from scratch. Perhaps the most famous single

example of this kind of thing is Reston, Virginia, which is being built

on over 7000 acres of pleasant Piedmont countryside in northwestern

Fairfax County. It has aroused hope across the nation in people

concerned with such things, for if private capital can go to work in

this enlightened fashion and still come out with a profit, the

implications for the future are enormous. Like any pioneering venture,

it has run into some troubles, and it lately suffered a shift in

management. But it is still being steered toward the same goal of

environmental grace and decency and seems likely to arrive there.

The attractiveness of such places to people disillusioned with standard

sprawl is attested by the fact that other developers, having

incorporated some of the Reston techniques--some recreational water,

some clustering of dwellings with communal open space between, some

amenities like underground wiring--are tending to call their latest

subdivisions "new towns" too. Many of them want to do things right, and

if it can be proved that doing things right will pay off as well as

doing them wrong, a certain amount of automatic improvement in the

quality of suburbanization can be expected. However, it must be noted

that the scale on which most developers can afford to operate, and the

market scarcity of suitable large tracts of land even when major capital

is available and the aims are noble ones, do not often give them control

of adequate natural units of territory in which whole planning can mean

what it should. Most such planning is going to have to continue to come

from governmental bodies, and the main hope must be that it will keep

improving, find stronger tools, and be reinforced and stimulated by laws

and programs from higher up.

The Nation's River: A report on the Potomac From the U.S. Department of the Interior · 第 30 / 44 题