Our national forests

by Richard H. D. Boerker

Figure 40. Forest officers ready to leave a tool box for a forest fire in the vicinity. Such tool boxes as these are stationed at convenient places on National Forests ready for any emergency. Arapaho National Forest, Colorado.

Forest Fire History. Very important also in fire protection are the studies which the Forest Service is carrying on, dealing with forest fire history. For many years back, records have been kept on all fires: their causes, area burned over, date of the fire, damage caused, the exact location of each fire, the cost of fighting it, the total number each month and each calendar year, and many other data. More recently records have been kept upon still further details connected with each fire, such as: the time elapsed between the start and the discovery of a fire, between the discovery and the report to the proper official, between the report and the beginning of the actual work of fighting, and the time required to put the fire out. Intensive studies have been made also upon the length and character of the fire season on each Forest, for it is important to know the maximum length, the minimum length and the average length of the fire season. These data show how much extra help must be hired for fire patrol and fire fighting, and during what periods the greatest damage is done, based both on acreage burned over and by the number of fires. Studies of this kind yield positive information on what areas of each Forest are particularly liable to lightning fires, to camp fires, and to incendiary fires. With this knowledge the Forest Supervisor can plan and distribute his men and funds more intelligently; they tell him during what period he can expect the most trouble, and therefore must have the greatest number of fire fighters at his command. It is scientific study like this that is doing more than anything else to solve the fire protection problem in the Western States.

Relation of Forest Fires to the Weather. In coöperation with the United States Weather Bureau, the Forest Service studies weather conditions in relation to forest fires. Weather forecasts have been sent to each Forest Supervisor throughout the fire season, informing him of the probable weather conditions. The velocity and duration of the wind, the temperature, the precipitation, and the relative humidity are all factors which greatly affect the inflammability of the forest. Forest Supervisors have been informed in these forecasts of what are known as emergency conditions, that is, an unusual and abnormal combination of weather conditions which make fire danger very great. These conditions may be a high wind, low relative humidity, high temperatures, or a combination of the three. When a Forest Supervisor is informed by the District Forester that emergency conditions are likely to exist during the next ten days or so, he immediately sends an alarm to all his Rangers to be especially watchful.

Improvements and Equipment for Protection. After the preliminaries of fire protection finance, forest fire history, and the study of weather and emergency conditions have been worked out, probably the first and most important prerequisite to forest fire protection is a matter already spoken of, namely, the improvements and the equipment. The construction and maintenance of improvements and the possession of suitable equipment is second in importance only to the organization which is to do the actual fire suppression. Roads, trails, telephone lines, fire lines, lookout stations, Ranger stations, tool and food caches, a central supply depot, and many other things are necessary before men can be effective. Each Forest Ranger has use for the following equipment: fire fighting tools, water bags and pails, teams, pack horses, wagons, automobiles, saddle horses, tents, portable telephone lines, riding and packing equipment, and many other special equipment, which must be hired when occasion for its use arises. If a Forest Ranger has not access to this equipment, and few of them have, he has hanging by his telephone a complete list of all the stores, stables, garages, etc., in the neighboring towns and how much equipment each can furnish when called upon.

Forest Fire Maps and Charts. Not the least important bit of equipment, by any means, is the fire map or maps. The Forest Supervisor has a fire map of his whole forest in his office and the Forest Ranger has one of his district (sometimes including the neighboring districts, too) hanging in his cabin, usually posted conspicuously, so that it can be referred to any time of the day or night without delay. These maps have upon them all the available information regarding the country which is to be protected. They show physiographic features, such as topography, creeks, springs, meadows, water, swamps, etc.; vegetative features, such as timber, forage, brush, reproduction, planted areas, regenerating areas, slashings, etc.; such man-made features as roads, trails, cabins, ranger stations, corrals, pastures, Supervisor's headquarters, sheep camps, cattle camps, ranches, camp sites, railroads, logging railroads and camps, sawmills, power plants, towns, villages, etc.; and special protective features, such as locations of men, tools, equipment, tool and food caches, local help, emergency help, fire lines, fire breaks, lookouts, government and private telephone lines, instruments and switchboards, locations of stores, state Fire Wardens, livery stables, pack trains, garages, stage routes, etc. All these features and data are not put upon one map; usually a series of maps are used or some of the information is put on charts or on the border of the maps. In short all this information is put in such form that it is available at the shortest notice for emergency conditions. It makes little difference how it is recorded, so long as the information is available when needed.

Figure 41. A forest fire on the Wasatch National Forest, Utah. Forest officers trying to stop a forest fire by cutting a fire line. Note the valuable growth of young trees which they are trying to save on the right.

Forest Fire Organization. The forest fire organization, whether it be on the whole National Forest or upon the Ranger district, consists of three agencies: the fire detection agencies, the fire reporting agencies, and the fire fighting agencies. All these must work in absolute harmony without interruption of any kind, to obtain the maximum of efficiency. The detection agencies consist of the lookout men, stationed at high, advantageous points which overlook large areas, and the moving patrolmen, who are assigned to definite beats or territory which cannot be adequately reached by the lookouts. Lookout men live in small cabins on the tops of high mountains, and they watch for fires constantly. In regions which have very few high points and which are not suited to that method of detection, moving patrolmen are employed. These men move about on foot, on horseback, on railroad speeders, in automobiles, or in any other conveyance adapted to the country they are in.

When the detectors find a fire they report it immediately to the nearest Forest Ranger or the Forest Supervisor. The Forest Ranger in whose district the fire is located is logically the first man to be informed, but telephone connections and other conditions sometimes alter this procedure. Just because a fire is found in, we will say, Ranger district number one, does not necessarily mean that the Forest Ranger of this district is the proper man to be notified. The fire may be at the very outer boundary of his district and may be much more easily accessible to the Forest Ranger in district number two. In any case it is all arranged beforehand just exactly who shall be notified in case of a fire in each and every corner of a National Forest. Each man in the organization has his duties and responsibilities determined for him in advance and he does his part without being prodded or reminded. The location of a fire in the wild and inaccessible forest regions of the West, which may seem a very simple matter, is determined in a very ingenious manner.

How Fires Are Located. The lookout man, as well as the Forest Rangers and the Forest Supervisor, is provided with identical maps of the Forest. These maps show most of the important features useful in fire protection work, including also the private lands, all government holdings, and the public land survey. This public land survey has divided the land surface into legal subdivisions known as townships, sections, and quarter sections, and it is by these and with reference to these that all features, both natural and artificial, are located. A township is usually a square 6 miles on a side, containing 36 sections. Each section is divided into quarter sections containing 160 acres each, which are further divided (though not by law) into forty-acre squares. The problem, therefore, that confronts the lookout man upon the discovery of a forest fire is to inform the Ranger or other Forest officer where the fire is—that is, in what section it is located, if it cannot be located with reference to some well-known natural feature.