Discovery Report Lower Watershed, HUC 10270104

Atchison, Douglas, Jefferson, Johnson, Leavenworth, Osage, , Wabaunsee, and Wyandotte Counties, KS & Kansas City (Jackson County), MO

Report Number 01

8/20/2012

Project Area Community List

Community Name Community Name

Atchison County, KS Johnson County, KS (cont.)

Atchison County Unincorporated Areas City of Overland Park

City of Atchison City of Roeland Park

City of Effingham City of Shawnee

City of Lancaster Johnson County Unicorporated Areas

Douglas County, KS Leavenworth County, KS

City of Baldwin City City of Basehor

City of Eudora City of Easton

City of Lawrence City of Linwood

City of Lecompton City of Tonganoxie

Douglas County Unincorporated Areas Leavenworth County Unincorporated Areas

Jackson County, MO Osage County, KS

City of Kansas City City of Carbondale

Jefferson County, KS City of Overbrook

City of McLouth Osage County Unincorporated Areas

City of Perry Shawnee County, KS

City of Winchester City of Auburn

Jefferson County Unincorporated Areas City of Topeka

Johnson County, KS Shawnee County Unincorporated Areas

City of De Soto Wabaunsee County, KS

City of Gardner Wabaunsee County Unicorporated Areas

City of Lake Quivira Wyandotte County, KS

City of Lenexa City of Bonner Springs

City of Merriam City of Edwardsville

City of Mission City of Kansas City/Wyandotte County Unified Government

City of Olathe

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Table of Contents

I. General Information ...... 3 II. Watershed Stakeholder Coordination ...... 6 III. Data Analysis ...... 7 i. Data that can be used for Flood Risk Products ...... 8 ii. Other Data and Information ...... 12 IV. Discovery Meeting ...... 14 V. RiskMAP Project Scope ...... 16 VI. Appendices ...... 18

Figures Figure 1: Lower Kansas Watershed ...... 4

Tables Table 1: CNMS categorized stream mileage ...... 5 Table 2: Data Type and Sources Collected for the Lower Kansas ...... 7 Table 3: Lower Kansas Watershed Gages with Peak Flow ...... 9 Table 4: Hazard Mitigation Plan Actions Summary ...... 13 Table 5: Lower Kansas Discovery Meetings ...... 14 Table 6: Discovery Meeting Discussion Topics ...... 15 Table 7: Scope of Work ...... 16

Financial assistance was provided to the Kansas Department of Agriculture – Division of Water Resources by the Department of Homeland Security’s Federal Emergency Management Agency to prepare this publication. The assistance was provided through Cooperative Agreement EMK-2011- CA-1107 as part of the Cooperating Technical Partner Program. This publication does not necessarily reflect the views of FEMA.

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I. General Information The purpose of this Discovery Report is to provide a foundation for potential future Federal Emergency Management Agency (FEMA) flood risk projects. The Discovery process is part of the FEMA Risk Mapping, Assesment and Planning (RiskMAP) program, which is considered on a watershed, developed from HUC-8 boundaries, basis rather than a community or county-wide basis. The RiskMAP program is designed to deliver quality data, increase public awareness of flood risk, and encourage local/regional actions that reduce risk by working with stakeholders. To qualify for a RiskMAP project, a watershed has to go through the Discovery process first. Discovery provides for the exchange of information between local, state, federal, and private-sector stakeholders, and includes meetings with stakeholders to better understand the watershed, decide whether a flood risk project is appropriate, and if so, collaborate on the project planning in detail. This report, along with the Discovery map, summarizes the information gathered as part of the Discovery process, what the challenges and issues the watershed and communities face, and what products or actions would be useful or are necessary for the community in reducing their flood risk.

The Lower Kansas Watershed was selected to go through Discovery because there is increasing population, identified flood risks and identified mitigation projects. The watershed is primarily located in Northeast Kansas, with a small portion extending into Northwest Missouri. It is approximately 1,666 square miles and includes (at least partially) nine counties and 33 communities. Portions of Atchison, Douglas, Jefferson, Johnson, Leavenworth, Osage, Shawnee, Wabaunsee, and Wyandotte Counties in Kansas are located in the watershed. The Cities of Auburn, Carbondale, De Soto, Easton, Edgerton, Edwardsville, Effingham, Eudora, Gardner, Lake Quivira, Lawrence, Linwood, Merriam, Nortonville, Shawnee, Tonganoxie and Winchester are entirely located in the watershed. Portions of the Cities of Atchison, Baldwin City, Basehor, Bonner Springs, Kansas City, Lancaster, Lecompton, Lenexa, McLouth, Mission, Olathe, Overbrook, Overland Park, Perry, Roeland Park, and Topeka in Kansas and the City of Kansas City, Missouri, are located in the watershed. Please note that the City of Kansas City, Missouri, is located in Jackson County, Missouri, but the portion of the watershed extending into Missouri is entirely contained within the coporate limits of the City of Kansas City, Missouri.

The main river of the watershed is the , which flows into the at the Kansas and Missouri state boundary. It is a major flooding source for the watershed and runs through the middle of the watershed. Several tributaries flow directly into the Kansas River and contribute to flooding in the area, but there are two primary tributaries flowing into the Kansas River that are major flooding sources. Stranger Creek starts in the north end of the Watershed in Atchison County and flows into the Kansas River near the City of Linwood. Wakarusa River starts in the west end of the watershed in Shawnee County and flows into the Kansas River near the City of Eudora. is on the Wakarusa River and is the largest lake in the watershed. It is operated and maintained by the U.S. Army Corps of Engineers Kansas City District, and it has a drainage area of 367 square miles. The terrain generally consists of gentle to moderate slopes.

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Figure 1: Lower Kansas Watershed

This watershed is experiencing rapid growth in population. Most of the counties in the watershed experienced an increase in population from 2000 to 2010, according to the 2010 Census. Osage and Wyandotte Counties were the only counties that declined in population, with 2.5 percent and 0.2 percent decreases, respectively. Three counties increased at a higher rate than the Kansas state average of 6.1 percent population growth. Douglas, Leavenworth and Johnson population increase by 10.9 percent, 11 percent and 20.6 percent, respectively. The population in the City of Kansas City, Missouri, increase by 4.1 percent, which is below the Missouri state average of 7.0 percent. At least four cities in the watershed experienced greater that a 25 percent increase in population from 2000 to 2010. The cities of De Soto, Gardner, Olathe and Shawnee grew by 25.4 percent, 103.5 percent, 35.4 percent and 29.6 percent, respectively. Five of the six most populous counties in Kansas are at least partially included in this watershed. Johnson has a population 544,129 and is the most populated county in the state. Shawnee has a population of 177,934 and is the third largest county in the state. Wyandotte has a population of 157,505 and is the fourth largest county in the state. Douglas has a population of 110,826 and is the fifth largest county in the state. Leavenworth has a population of 76,227 and is the sixth largest county in the state. Kansas City, Missouri, is the largest city in Missouri with a population of 459,787. Overall, there are 1,126,019 people in the nine counties in Kansas, and 1,585,806 people with Kansas City, Missouri, included.

Information about the flood study needs within the state of Kansas and Missouri was gathered from the Coordinated Needs Management Strategy (CNMS) database. The purpose of CNMS is to assess the need to revise and update flood hazard information. The CNMS process determines whether existing flood hazard studies are valid, by evaluating both natural and man-made changes that affect the floodplain. Analysis is preformed on gage,

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modeling methodology, new or removed flood control and hydraulic structures, channel reconfiguration, channel fill and scour, rural versus urban regression equations, land use changes, the availability of better topography, and significant storms. Requests by communities or other interested parties are also noted. CNMS analysis is a useful tool for prioritizing the greatest needs and planning when these needs can be met.

There are approximately 1,639 total stream miles in the CNMS database in the watershed. This includes streams with a drainage area of at least one square mile. There are basically five categories streams were classified into in this watershed. They can be categorized as A (approximate studies), valid; A, invalid; AE (detailed studies), valid; AE, invalid; X (unmapped streams with one square mile or greater of drainage area), assessed. Table 1 contains information for how many stream miles per category per county are in the watershed.

Table 1: CNMS categorized stream mileage

Atchison County, FIPS: 20005 Leavenworth County, FIPS: 20103 A, Invalid 91 miles* A, Invalid 227 miles* Douglas County, FIPS: 20045 AE, Valid 8 miles A, Valid 259 miles AE, Invalid 85 miles*** A, Invalid 14 miles Osage County, FIPS: 20139 AE, Valid 75 miles** A, Valid 110 miles AE, Invalid 70.5 miles AE, Valid 1 mile X, Assessed 9.5 miles Shawnee County, FIPS: 20177 City of Kansas City, MO, FIPS: 29095 A, Valid 154 miles AE, Invalid 1 mile AE, Invalid 19.5 miles Jefferson County, FIPS: 20087 Wabaunsee County, FIPS: 20197 A, Valid 195 miles A, Valid 10 miles AE, Valid 4 miles Wyandotte County, FIPS: 20209 AE, Invalid 9 miles A, Invalid 6 miles Johnson County, FIPS: 20091 AE, Valid 21 miles A, Valid 1 mile AE, Invalid 40 miles AE, Valid 206 miles AE, Invalid 22.5 miles

*Study underway, which will validate streams. **Stream mileage includes 0.5 miles of an AO detailed study ***Study underway that will validate Stranger Creek, which accounts for 61.5 miles.

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II. Watershed Stakeholder Coordination A vital link in the Discovery Process is Watershed Stakeholder Coordination. FEMA Region VII and the Kansas Department of Agriculture – Division of Water Resources (KDA-DWR) identified the Project Team for this study.

To start the discovery process, contact information was compiled for communities in the watershed and letters were sent in November 2011, along with the Pre-Discovery Newsletter and Questionnaire. The contact information was compiled from the web using FEMA’s Community Information System (CIS) website, the Kansas League of Municipalities website, and local community or county websites when available. Letters were specifically sent to chief elected officials (CEOs), Floodplain Administrators (FPAs), and Emergency Managers. The purpose of the letters was to give communities an introduction to the process. The letters gave a general timeline on when certain steps in the discovery process would occur and informed communities what data was being requested. The newsletter gave a general overview of the RiskMAP and Discovery processes. It listed what data would be useful if available, and it contained contact information for important contacts at the state level. The intent of the questionnaire was to spark curiosity about the watershed to encourage Discovery meeting attendance and participation. The answers to the questionnaire were revealed at the meeting. The letters, newsletter and questionnaire are included in Appendix A of this report.

A statewide partnership meeting was held on December 14, 2011. The meeting was for all eight watersheds going through discovery in FY11 in Kansas. Representitives of various state and federal agencies as well as project team members were in attendance at the meeting. There was a general overview and discussion that concerned all watersheds, such as data available in all watersheds. After general discussion, specific discussions about each watershed occurred. The notes, powerpoint presentation and attendance sheets are included in Appendix B of this report.

Discovery meeting invitees were contacted by phone to verify and update contact information, inform them when meetings would occur, answer any questions or give an overview about the RiskMAP and Discovery process, and to see if any potentially useful data was available. The meeting invites, contact sheet and call log are included in Appendix A of this report.

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III. Data Analysis A listing of the data collected during the Discovery Process can be found in Table 2. It includes the Data Type and Source. The data analyses are divided into two groups: 1) Those that can be used for Flood Risk Products (regulatory and non-regulatory) such as topography and 2) other Data and Information that can be used for future mitigation planning and projects.

Table 2: Data Type and Sources Collected for the Lower Kansas

Data Types Source Flood Insurance Study & DFIRM Database FEMA Map Service Center Community Assistance Visits FEMA CIS Community Rating System FEMA CIS Population Data U.S. Census Bureau Insurance Policies FEMA CIS Hazard Mitigation Plans KDA-DWR Mitigation Officer Repetitive Loss KDA-DWR Mitigation Officer Flood Insurance Claims FEMA CIS Letters of Map Change (LOMCs) KDA-DWR Mapping Coordinator Hazards Hazard Mitigation Plan Boundaries: Community, Transportation and County Effective DFIRM Database DASC website Boundaries: Watershed http://www.kansasgis.org/index.cfm Digitized from “Special Water Districts in Kansas” report dated September, 1967; County GIS Boundaries: Drainage Districts Departments USACE national file – provided by Levee Locations FEMA R-VII Regional Support Center Scour Data National Bridge Inventory Water Structure Inventory provided by Dams KDA-DWR Study Needs CNMS Database DASC website Topographic Data - LiDAR http://www.kansasgis.org/index.cfm DASC website 2010 NAIP Imagery http://www.kansasgis.org/index.cfm Local imagery Provided by county or community USGS Estimation of Peak Flows http://pubs.usgs.gov

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i. Data that can be used for Flood Risk Products Topographic Data

LiDAR DEM

LiDAR (Light Detection and Ranging) data is collected using ultraviolet, visible and near infrared light to image a wide range of targets with high resolution. It is currently available for most of the watershed. The only area it is not available for is Wabaunsee County, which is scheduled to be flown this year.

In 2006, the U.S. Geological Survey (USGS) coordinated LiDAR collection. The counties collected under this project include Douglas, Jefferson, Johnson, Shawnee, Wyandotte Counties and Jackson County, Missouri. The horizontal accuracy of this LiDAR is 1.4 meters, which supports two-foot contours.

In 2010, the U.S. Army Corps of Engineers – Kansas City District, USGS, NRCS-KS, KDA, and Kansas GIS Policy Board partnered together to provide LiDAR for Atchison, Leavenworth, and Osage Counties. The project was contracted through the U.S. Army Corps of Engineers – St. Louis District – Center of Expertise for Photogrammetric Mapping and flown by Surdex Corporation. The accuracy of this LiDAR is 0.6 meters, which supports one-foot contours.

The LiDAR data is available on the Kansas Data Access & Support Center (DASC) http://www.kansasgis.org/index.cfm.

In 2012, more than 28,000 square miles of LiDAR was acquired, so that for more than half the state, LiDAR data is available. Wabaunsee and Wyandotte Counties are part of this acquisition, which will be available by the end of 2012.

As a separate project, Johnson County is acquiring its own LiDAR for 2012. The flight has been flown, but the data is not available yet. It is expected to be 1 meter accuracy and to meet all of the USGS and FEMA guidelines and specficiations.

Hydrologic Data

Stream gages measure the water surface elevation (stage) and/or discharge (flow) along streams. These measurements are very important in the detailed analysis of streams and floodplain determinations. Twenty-two USGS gage sites were identified in the watershed area providing peak-flow data. The stream gages in the Lower Kansas are shown in Table 3 below. Spatial locations of this data are provided in the geodatabase located in Appendix of this report.

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Table 3: Lower Kansas Watershed Gages with Peak Flow

Peak- Drainage Peak-flow Peak-flow flow Site Source Site Name Area data data data Number (mi2) begin date end date count KANSAS RIVER AT LECOMPTON, USGS 6891000 KS 58,460 1/6/1891 6/3/2011 98 STONE HOUSE CREEK AT USGS 6891050 WILLIAMSTOWN, KS 12.9 5/26/1963 4/1/1988 26 WAKARUSA RIVER NEAR USGS 6891260 RICHLAND, KS 164 4/20/2003 5/25/2011 9 WAKARUSA RIVER BELOW USGS 6891483 CLINTON DAM, KS 412 9/28/1973 3/30/1980 8 WEST BRANCH YANKEE TANK USGS 6891486 CREEK NEAR LAWRENCE, KS 1.85 6/26/1969 5/7/1973 5 EAST BRANCH YANKEE TANK USGS 6891488 CREEK NEAR LAWRENCE, KS 1.35 6/26/1969 9/24/1973 5 YANKEE TANK CREEK NEAR USGS 6891490 LAWRENCE, KS 3.9 6/26/1969 9/24/1973 5 WAKARUSA RIVER NEAR USGS 6891500 LAWRENCE, KS 425 1921 2/27/2011 76 NAISMITH CREEK AT USGS 6891650 LAWRENCE, KS 1.54 10/11/1973 6/19/2011 24 STRANGER CREEK NEAR USGS 6891810 POTTER, KS 184 3/5/2004 8/20/2011 8 STRANGER CREEK NEAR USGS 6892000 TONGANOXIE, KS 406 4/21/1929 5/27/2011 83 USGS 6892350 KANSAS RIVER AT DESOTO, KS 59,756 10/13/1973 6/3/2011 38 KILL CREEK AT 127TH ST AT USGS 6892359 DESOTO, KS 23.7 6/8/2010 5/25/2011 2 KILL CREEK AT 95TH ST NEAR USGS 6892360 DESOTO, KS 53.4 7/24/2004 5/25/2011 8 CEDAR CREEK AT HWY 56 AT USGS 6892440 OLATHE, KS 13.3 6/4/2001 6/4/2005 5 CEDAR CREEK BELOW OLATHE USGS 6892460 LAKE NEAR OLATHE, KS 17.3 6/4/2001 5/19/2004 4 CEDAR CREEK NEAR CEDAR USGS 6892490 JUNCTION, KS 38.9 6/13/1966 10/15/1967 3 CEDAR CREEK NEAR DESOTO, USGS 6892495 KS 58.4 8/31/2003 3/27/2011 9 KANSAS RIVER AT BONNER USGS 6892500 SPRINGS, KS 59,928 6/1/1903 9/28/1973 58 MILL CREEK AT JOHNSON USGS 6892513 DRIVE, SHAWNEE, KS 58.1 8/31/2003 2/27/2011 9 USGS 6892800 TURKEY CREEK AT MERRIAM, KS 6.76 10/11/1973 6/18/2011 19 TURKEY CREEK AT KANSAS USGS 6892940 CITY, KS 22.3 6/9/1974 4/13/1987 14

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GIS & Stormwater Data

Atchison County Atchison County has parcel data, a point file of all residential structures, and building footprints for major structures that can be joined with the parcel for assessed values. They have transportation layers available including right-of-way data for Federal, State, Railroad, County, Municipal, and Township. They have corporate boundaries. They have 6-inch local imagery that is currently available from 2008, and the 2012 imagery will be delivered in August, 2012.

City of Kansas City, MO The City of Kansas City, Missouri, has parcel, transportation, and corporate boundaries GIS data. They also have a hydrology layer and a bridge and culvert shapefile. They have a plainemetric layer that includes building footprints, wich is attached to the parcel data. The parcel data contains land value and structure value, but not the value of individual structures of a single parcel. They do not have a specific impervious layer, but it can be mostly derived from the plainemetric data. They have 6-inch local imagery that is currently available from 2010, and the 2012 imagery has been flown but is not available yet.

Douglas County Douglas County has parcel, transportation, and corporate boundaries GIS data. They have a building footprint layer that can be joined with the parcel data layer to obtain assessed values. They have 6-inch local imagery that is currently available from 2009, and another flight is scheduled for 2013.

The City of Lawrence has a partially complete impervious layer. Also the most up-to-date corporate limits should be obtained for the city rather than the county. They have a stormwater study available for Lake Alvamar.

Jefferson County Jefferson County has parcel, transportation, and corporate boundaries GIS data. They have a building footprint layer that can be joined with the parcel data layer to obtain assessed values. They also have ag-use data and road-structures data. They have 6-inch local imagery that is currently available from 2009, and the 2012 imagery has been flown but is not available yet. They have a stormwater study available for Lake Dabnawa.

Johnson County Johnson County has parcel, transportation, and corporate boundaries GIS data. They have building footprints and an edge of pavement layer, which between the two datasets, can create a mostly comprehensive impervious layer. They have a land use layer, utility data and stormwater network that shows flow. They also maintain a list of planned capital

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improvement projects. They have 2010 6-inch aerial imagery that is currently available, and the 2012 imagery has been flown and will be available by the end of July, 2012. In addition to the orthophotos, they also have oblique photography available.

The Johnson County Stormwater Management Program keeps available data and information on their website. Previous projects can be found at http://stormwater.jocogov.org/Projects/PreviousProjects.shtml. Current projects can be found at http://stormwater.jocogov.org/Projects/CurrentProjects.shtml. They also have useful reports at http://stormwater.jocogov.org/Projects/UsefulReports.shtml.

The City of Gardner has a Watershed Master Plan that was created in 2008 for localized improvements.

The City of Merriam has stormwater improvement projects planned that should mitigate most of the Repetitive Loss properties in the city. The Meyer Creek Improvement project is planned to be constructed and completed in the years 2013 and 2014. The Antioch Creek Improvement project is scheduled for construction and completion in the years 2015 and 2016.

Leavenworth County Levenworth County has parcel, transportation, and corporate boundaries GIS data. They also have a hydrology layer and a bridge and culvert shapefile. They have 6-inch local imagery that is currently available from 2010, and the 2012 imagery has been flown but is not available yet.

Osage County Osage County has parcel, transportation, and corporate boundaries GIS data. They have local imagery that is currently available from 2008, and there is no plans currently for another flight. The imagery is at 6-inch detail for the incorporated communities.

Shawnee County Shawnee County has parcel, transportation, and corporate boundaries GIS data. They have 6-inch local imagery that is currently available from 2009, and the 2012 imagery has been flown but is not available yet.

Wabaunsee County Wabaunsee County does not house their GIS data, but parcel data, transportation, corporate boundaries and water layers are available from R&S Digital in Great Bend, Kansas.

Wyandotte County Wyandotte County has parcel, transportation, and corporate boundaries GIS data. They have 6-inch local imagery that is currently available from 2010, and the 2012 imagery has been flown but is not available yet.

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U.S. Army Corps of Engineers The USACE has an active improvement project in the watershed for Turkey Creek that includes constructing flood control structures. The project affects the City of Kansas City, Missouri, Johnson County, and Wyandotte County.

Other studies There is a study that is nearly complete on dredging and in bank stability on the Kansas River. The study is being completed by Kansas State University.

ii. Other Data and Information Average Annualized Loss (AAL)

There is a national AAL dataset available that was ran on 2000 census data at the census block level. There also is data available at the census tract level, but since the census bock-level data was available in time for this discovery process, it was use since it is at a more detailed level. The AAL data was created using the FEMA HAZUS program. It was ran on streams that have 10-square-miles or greater of drainage area. The data could could be enhanced by using a smaller drainage area and/or more detailed land tracts, such as parcel data or building footprints. The AAL data is included in Appendix D of this report.

Community Rating System (CRS)

CRS is a program within the National Flood Insurance Program (NFIP) that is voluntary within the program and rewards pro-active communities with discounted flood insurance premium rates. The program encourages community floodplain management at a higher level than the NFIP minimum standards. There are six communities in the watershed enrolled in the CRS program. The cities of Lawrence, Lenexa, Olathe, Overland Park, Shawnee, and Shawnee County and the City of Kansas City, Missouri, have a current CRS status.

Mitigation Plans & Mitigation Projects

Hazard Mitigation Plans (HMP) have been completed and approved for all the counties in the watershed. The purpose of the Hazard Mitigation Plan is to ensure that each participating community is eligible to obtain federal funding under the Hazard Mitigation Grant Program, Pre-Disaster Mitigation Program and the Flood Mitigating Assistance Program. Through this plan, counties are able to determine the hazards affecting the area, the risks these hazards present to the respective communities, develop mitigation goals, and identify feasible mitigation actioins for the participating entities. Table 4 summarizes the mitigation actions in the plans relating to floods. The table also includes information submitted by the communities that were not specifically outlined in the HMP.

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Table 4: Hazard Mitigation Plan Actions Summary Emergency Floodplain

Management Management

out Repetitive -

Systems / Enforcement/ (inc. weather radios) Community NFIP Participation/ Promothion CRS with Continue or Join programs EM involvement Planning/ Training Critical Facility Protection Systems Warning RemovalDebris Code Odinance/ Update Reduction Flood Measures/ Recommendations / projects control Flood updates Bridge/Culvert Education Public risk of flood Mitigate/ Buy properties Floodprone Loss/ Technology GIS/ Update orData Atchison County X X X X X X X X Atchison X X Effingham X X Kansas City, MO X X X X X X X X X Douglas County X X X X X X X Baldwin City X X X X Eudora X X X X X X X X X Lawrence X X X X X Lecompton X X X Jefferson County X X X X X X X X X McLouth X X X Perry X X X Winchester X X X Johnson County X X X X X X X De Soto X Gardner X X X X Lenexa X X X X X X X X X Merriam X Mission X X Olathe X X X X X X X X X X X Overland Park X X X X X X Roeland Park X X Shawnee X X X X X Leavenworth County X X X X X X X X X X X Basehor X X X X X X Easton X X X X X X Linwoord X X X Tonganoxie X X X X X X Osage County X X X X X X Carbondale X X X Overbrook X Shawnee County X X X X X X X X Auburn X X Topeka X Wabaunsee County X X X X X X X X Wyandotte County – X X X X X X X X X X X All jurisdictions

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IV. Discovery Meeting Three Discovery meetings were held in the Lower Kansas watershed and are listed below in Table 5.

Table 5: Lower Kansas Discovery Meetings

Location Time, Date Address Lawrence 2 PM, April 10, 2012 Lawrence City Hall City Commission Room 6 E. 6th Street Lawrence, KS 66044 Overland Park 10 AM, April 11, 2012 Myron E. Scafe Building Training Room 8500 Antioch Road Overland Park, KS 66212 Kansas City, KS 2:30 PM, April 11, 2012 Cabela’s “The Bears” meeting room 10300 Cabela Drive Kansas City, KS 66111

For the meetings, a PowerPoint presentation was created that gave an overview of the RiskMAP program and the Discovery process, with specific information about the watershed. A Discovery map was created of the whole watershed that displayed repetitive loss properties – both mitigated and non-mitigated; bridge scour data for serious, critical, imminent and failed locations; USACE levees locations; CNMS lines; the watershed boundary; drainage districts; city boundaries; watershed districts; county boundaries; lakes; letter of map change (LOMC) locations; roads, railroads; USGS stream gauges; and dams categorized as high hazard, significant hazard and low hazard. The map also contained a table listing the best available topography and imagery. Due to the high volume of data in the watershed, five maps were created at a zoomed in level for the Wakarusa River valley, the Stranger Creek River valley, the City of Lawrence, the North Kansas City metro area, and the South Kansas City metro area. These maps showed data from the watershed-wide maps that was more useful at a zoomed in level and mitigation action areas pulled from the Hazard Mitigation Plans. On the Lawrence, North KC, and South KC maps imagery was also shown. In addition to the discovery maps, a watershed-wide Average Annualized Loss (AAL) map was created using the National AAL dataset. Since the data was available, it was created as an example of a potential RiskMAP product. The AAL maps showed the AAL data categorized as Low, Medium-Low, Medium, Medium-High, and High. The maps are included in Appendix D of this report.

The Discovery meetings followed a general format of brief introductions to introduce project team and determine audience, followed by PowerPoint presentation, and an explanation of the data on the maps, followed by round table introductions and discussion.

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For take-away handouts, attendees were given agendas, Discovery Report outlines, and a Communication Flyer. The attendance sheets, meeting minutes, a PowerPoint presentation, handouts, and other relevant information is included in Appendix C of this report. Specific items of discussion is included below in Table 6.

Table 6: Discovery Meeting Discussion Topics Communities Affected Topic Discussion Summary Johnson County Less than 1 The county would like to see detailed studies extend square mile further than the 1 square mile drainage area to Detailed Studies capture some repetitive loss properties. City of Lawrence Updated There are several areas in the city that need revised Hydrologic and H&H. Hydralic analysis Entire Watershed Public Outreach Several communities brought up that tools and training that help the communities communicate risk would be very beneficial. Public outreach meetings, 3D flood diagram, and training for lenders and real estate agents were specifically mentioned.

Cities of Kansas City, KS & Turkey Creek The USACE is in the process of completing a new MO; City of Merriam; City project on Turkey Creek. The project included of Mission; City of construction of flood control structures. It is not Overland Park; City of complete yet. Shawnee; and Wyandotte County Jefferson County Lake Dabanawa The effective DFIRM study shows cross-sections running through the middle of the lake. It needs a static elevation. There is a study available. Wyandotte County Detailed Studies The county would like to have new detailed studies for all streams. City of Bonner Springs Wolf Creek There is a 4 or 5 foot difference in the Base Flood Elevation between the Leavenworth and Wyandotte County lines. A new detailed study is needed for it. Douglas, Jefferson, Kansas River The studies shown on the FIRMs are old and need to Johnson, Leavenworth, and Detailed Study be updated. The ideal study would be from Tuttle Wyandotte Counties Creek Dam to the Missouri River.

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V. RiskMAP Project Scope

The Lower Kansas Watershed was selected to proceed with a RiskMAP project for FY 2012. A preliminary scope of work is listed below in Table 7. The scope of work was developed based on identified needs through the Discovery process.

Table 7: Scope of Work

NEW DETAILED STUDIES Douglas County Atchison Topeka and Santa Fe Tributary 0.25 miles Atchison Topeka and Santa Fe Tributary Unnamed Tributary 1 3.03 miles Baldwin Creek 8.82 miles Brook Street Tributary 0.66 miles Country Club Hope Plaza Tributary 1.21 miles Deerfield Tributary 2.55 miles Knowledge Hill Tributary 2.39 miles Maple Grove Drainage 4.94 miles Maple Grove Drainage East Fork 1.66 miles Maple Grove Drainage Tributary 0.93 miles Maple Grove Drainage West Fork 1.40 miles Mud Creek 6.89 miles Mud Creek Unnamed Tributary 1 1.13 miles Oak Ridge Tributary 2.53 miles Yankee Tank West Branch 2.82 miles Leavenworth County Mud Creek Unnamed Tributary 1.1 0.82 miles Wolf Creek 14.07 miles Wolf Creek Unnamed Tributary 5 2.17 miles Wolf Creek Unnamed Tributary 6 0.58 miles Wolf Creek Unnamed Tributary 7 0.28 miles Wolf Creek Unnamed Tributary 8 0.37 miles Wolf Creek Unnamed Tributary 9 0.66 miles Wolf Creek Unnamed Tributary 10 0.97 miles Wyandotte County Betts Creek 2.91 miles Brenner Heights Creek 3.36 miles Little Turkey Creek 4.64 miles Wolf Creek Unnamed Tributary 2 0.66 miles Wolf Creek Unnamed Tributary 3 0.80 miles Wolf Creek Unnamed Tributary 4 3.42 miles

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RISK MAP PRODUCTS Flood Depth Grids For Zone AE streams mentioned above 76.91 miles For Zone A streams throughout watershed 1,067 miles For Johnson County Zone AE streams 201 miles Percent Annual Chance flooding grid For Zone AE streams mentioned above 76.91 miles For Zone A streams throughout watershed 1,067 miles For Johnson County Zone AE streams 201 miles Percent Chance of flooding over a 30-year period grid For Zone AE streams mentioned above 76.91 miles For Zone A streams throughout watershed 1,067 miles For Johnson County Zone AE streams 201 miles

OUTREACH All Kansas counties in watershed Public Outreach Meeting (2 per county) 14 meetings

Regulatory Mapping All counties in the watershed either have or are in the process of obtaining Digital Flood Insurance Rate Maps (DFIRM) through the FEMA Map Modernization program. Since this is the case, only the new detailed study areas will receive updated panels and Flood Insurance Studies (FIS). After the updated preliminary maps are distributed. The new detailed study areas will go through an appeals period for all communities affected by the updates. Before the studies go effective, the maps will need to be adopted and the communities’ ordinances will need to be updated.

Changes Since The Last FIRM The changes since the last FIRM or CSLF are maps that show polygon areas of changes to 1% and 0.2% annual chance floodplains and floodways. This deliverable will be produced for all of the new detailed study areas. It will show the change in floodplain from the effective DFIRM to the new study.

Flood Depth Grids Flood Depth Grids are rasters, which show the depth of the water. The Depth is calculated as the difference in feet between the water surface elevation and the ground. The depth grids will be available for 10-, 4-, 2-, 1-, and 0.2-percent-annual-chance flooding events.

Percent Annual Chance of Flooding Grid These grids are a dataset that represents the percent annual chance of flooding for locations along a flooding source. So not only is the Special Flood Hazard Area located on a map as is indicated on the FIRM panel, but its probability of flooding in a given year is indicated.

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Percent Chance of Flooding over a 30-year Period Grid This dataset represents the percent chance of flooding with a 30-year period for locations along a flooding source, intended to show the probability of flooding during the life of the average mortgage.

Flood Risk Report All of this data will culminate in a report, which summarizes the project level findings. It will be prepared for the entire watershed with community specific sub-sections.

VI. Appendices Appendix A – Correspondence and Contact Information

Appendix B – Stakeholder Meeting Documentation

Appendix C – Discovery Meeting Documentation

Appendix D – Discovery Maps and GIS Data

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