FTN ASSOCIATES
伊利诺伊河流域未绘制地图的支流
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洪泛区分析和绘制 FEMA（联邦紧急事务管理局）洪水地图是 FTN Associates 有限公司（FTN）的常规工作。(FTN) 是一家位于阿肯色州小石城的多学科环境咨询公司。该公司由前美国陆军工程兵部队（USACE）工程师创立，在 NPDES 许可、废水管理、水文地质研究和固体废物等领域积累了丰富的专业知识。洪泛区划定项目一直是公司项目组合的核心。
FTN 的洪泛区划定项目是核心项目
FTN 的项目工程师 Lee Beshoner 解释说，洪泛区划定项目一般分为两个子类别：项目要么是对少数水道的详细分析，要么是对更多溪流或河流的一般性分析。FTN 与阿肯色州签订了合同，根据国家洪水保险计划 (NFIP) 划定该州的洪泛区。作为这份长期合同的一部分，FTN 最近在阿肯色州西北部的伊利诺斯河流域处理了三条未绘制地图的社区溪流。
Subdivision, Pasture and Extreme Terrain in the Illinois River Watershed
Beshoner explained that this set of tributaries in Northwest Arkansas had “a little bit of everything” in terms of types of land use. Pasture and rural lands transitioned to residential subdivisions before returning to undeveloped, open land uses, at which point the tributaries joined the Illinois River. To further complicate the analysis, these tributaries also had multiple structures in the stream channels—bridges, culverts and road crossings—especially in areas near residential subdivisions.
在地形极其多变的地区创建数字化地表地形是一项具有挑战性的工作，因为在这些地区，地形从平坦过渡到陡峭。在未开发地区，建立模型非常简单；但在与居民区毗邻的地区，这项任务就变得困难得多。
关于 FTN Associates Ltd.
FTN Associates Ltd.(FTN) 是一家多学科环境咨询公司，总部位于阿肯色州小石城，自 1981 年以来一直致力于满足客户的需求。公司为阿肯色州及全国的私人和政府客户提供专业服务。公司由前美国陆军工程兵部队（USACE）工程师创立，在 NPDES 许可和废水管理、水文地质研究以及固体废物等领域积累了丰富的专业知识。FTN 提供广泛的专业知识，包括独特的解决问题的能力，使客户受益匪浅。凭借数十年与联邦、州和地方监管机构打交道的经验，客户可获得可靠、经济高效的专业服务。FTN 以最低成本为客户提供切实可行的解决方案。
FTN Associates 总部位于小石城，在阿肯色州费耶特维尔、洛杉矶巴吞鲁日和密苏里州切斯特菲尔德设有分支机构。
GeoHECRAS 简化了复杂地形中的模型开发工作
For stormwater calculations, FTN uses ArcGIS and USACE HEC-HMS, and then enters the digital terrain data into GeoHECRAS where stream centerlines, embankments, and other features are processed. Beshoner states that GeoHECRAS has definitely replaced much of FTN’s pre-processing software. Other than some preparatory work, the firm has discovered that nearly every aspect of model construction and analysis can be done in GeoHECRAS. The software lets the firm easily incorporate a variety of geospatial data files: survey data, channel data, bridge or culvert data and road data before running model computations. Prior to GeoHECRAS, Beshoner notes that his firm would have needed to rely on ESRI ArcGIS in addition to the USACE’s HEC-RAS and some additional output processing software to edit and run models.
今非昔比：实时修改模型
Beshoner 解释说，在使用 GeoHECRAS 之前，对模型的修改只能通过一个非常反复、耗时的过程来完成，这个过程需要在不同的软件应用程序之间切换。他解释说，GeoHECRAS 简化的用户界面可以让工程师轻松地与模拟进行图形交互、修改横截面以及调整其他结构或地理要素。软件会自动实时更新模型和可视化效果，为公司节省了大量时间和精力。如果 FTN 需要为某个场景制作动画，GeoHECRAS 也能提供这种功能。
该软件拥有多种工具，可轻松生成项目各阶段的可视化结果：挑战、模型结果和可能的解决方案。这些引人注目的可视化效果深受 FTN 客户的喜爱，有助于澄清具体的项目问题。该软件有多种工具可用于展示一个故事，轻松生成项目每个阶段的可视化结果：挑战、模型结果和可能的解决方案。这些引人注目的可视化效果深受 FTN 客户的喜爱，有助于澄清具体的项目问题。
"我们发现 GeoHECRAS 有助于纳入勘测数据：渠道信息、桥梁或涵洞数据、道路数据......这样做非常容易。我们还喜欢在 GeoHECRAS 中看到溢洪道的计算结果。在地图上看到实时绘制的计算结果图形是一大优势"。
最大限度地发挥 GeoHECRAS 的威力：创建模板、流程标准化等
The geospatial referencing capabilities of GeoHECRAS has been highly useful for FTN Associates to bring older models up to date. GeoHECRAS easily and accurately repositions these models on the map, a feature which allows engineers to quickly “resurrect” older simulations and quickly get up to speed and back to work. The software is also highly beneficial when it comes to modeling larger scale projects. FTN can create templates with GeoHECRAS to easily run 600 to 700 models for a watershed. With certain kinds of projects that FTN runs frequently, GeoHECRAS automatically knows what to look for and populates the data accordingly. The ability to standardize methodologies and categories of projects for recurring work has created significant time efficiencies and cost savings for FTN.
In many respects, CivilGEO software has been a “game changer” for the firm. Beshoner looks forward to trying out some of GeoHECRAS’s newer features, like the software’s “Google Street View”.
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