the property on which the associated structure or interpretative feature sits should be identified in order to keep a record of the multiple parties involved in the interpretation and preservation of the Croton Waterworks. Intended Audience Identification of the intended audience who will make use of the interpretation is crucial in evaluating the potential scale of the dissemination of information through the interpretative element. This audience may consist of out-of-town visitors, local populations, various age groups, and so on. Therefore, all of the possible audiences who may benefit (or who do not benefit) from a particular type of interpretation should be noted. Materials In addition to noting the specific material type used in the interpretation, additional features to note include the ease of production (and reproduction, if necessary), the cost of production (and reproduction, if necessary), and the material’s durability. These materials may include wood, plastic, metal (specific metal should be noted), fabric, paper, and so on. Condition An assessment of the condition of the particular interpretation is necessary to evaluate its durability and effectiveness. If it is in good condition, the material may serve as a model for further interpretative schemes. If deteriorated, it will need to be replaced using more durable materials. 3. The interpretation is kept up-to-date and in good condition 4. The interpretation is easily visible and accessible Visibility If the interpretation is on-site, a determination of the level of public visibility is necessary in addition to a notation of where on the site or structure the interpretation is located. Accessibility If the interpretation is on-site, a determination of the level of public accessibility is necessary. Accessibility may include whether or not the interpretation may be approached at any time of day. If the interpretation is off-site, its physical location in relation to the Croton Waterworks structures should be noted, as well as its hours of operation. If the interpretation is provided via the Internet, for example, this should be mentioned, as well as how easy or difficult it is to find out about these measures and access them. Existing Interpretation Methodology for the Analysis of Existing Interpretation Based on the preceding analysis, we present below a methodology for use in documenting, assessing, and analyzing existing and future interpretation measures for the Croton Waterworks. The methodology may be used to determine if an interpretative measure is present for a specific site as well as for system-wide interpretative schemes. Associated Structure and Location Section 4: Interpretation The New York State Heritage Area Museum in Ossining is the only museum dedicated to the Croton Waterworks, although its focus is on the Old Croton Aqueduct, not the entire system. The museum contains scale models of individual parts of the system, as well as signage that educates visitors about various aspects of the system’s history and significant sites and provides a necessary form of off-site system interpretation. However, the museum is located off the Old Croton Aqueduct trail, and does not incorporate any of the actual infrastructure of the system—a fundamental consideration, particularly when dealing with a system in which so much original fabric remains. Determination of Effectiveness The determination of the effectiveness of the interpretation involves deciding if: 1. The intended audience is being reached 2. The interpretation clearly communicates the history and significance of the individual structure/site and the system as a whole 61 Interpretation recommendations for seven of the Croton Waterworks typologies are presented below. This list is meant to provide ideas for “interpretation by typology,” the purpose of which is to supplement the holistic interpretation plans presented later in this volume with ideas for interpretive features, which will aid in the connection of structures within each typology. Ventilators Ventilators were originally placed at every mile along the length of the Old Croton Aqueduct. Although all have been demolished in New York City, many are extant along the Old Croton Aqueduct Trail in Westchester County. These ventilators may be used as part of a circuit-training course, with an associated map or signage developed. QR codes will also be proposed for placement on small-scale signage at (possibly) each ventilator, which will connect a visitor to online information regarding the structures. As part of “The Ventilator Voyage,” each ventilator may be numbered in sequence, with each QR code linking to one piece of a complete text or vocal explanation of the history/ significance of the ventilators. The entire story will not be told until all ventilators have been visited! 62 Right: Axonometric of the 119th Street Gatehouse, a New York City landmark that is located across the street from Columbia University a link between the urban environment and its regional resources. The interior space would be used for programming, including (but not limited to) temporary exhibitions and events exploring this urban-rural relationship. The Center would also incorporate an exploration