SUMAWA: The Njoro River SUMAWA: The Njoro River WatershedWatershed

Gideon Obare – Egerton UniversityGideon Obare – Egerton UniversitySamuel Kibichii – Moi UniversitySamuel Kibichii – Moi University

Siân Mooney – University of WyomingSiân Mooney – University of WyomingAlsoAlso

University of California – DavisUniversity of California – DavisKWSKWS

Department of Fisheries-GOKDepartment of Fisheries-GOK

Funded by USAIDGL-CRSP and PD/A-CRSP

Application DescriptionApplication Description RegionRegion

• Rift ValleyRift Valley Njoro River WatershedNjoro River Watershed

Production systemsProduction systems• Maize monocropMaize monocrop• Maize/BeansMaize/Beans• Maize/Beans/PotatoesMaize/Beans/Potatoes• Vegetables (kale, onion, spinach, other)Vegetables (kale, onion, spinach, other)• Livestock grazing (pastoral)Livestock grazing (pastoral)• Livestock, small scale (free range/zero Livestock, small scale (free range/zero

grazing)grazing)

Application Description (2)Application Description (2)

IndicatorsIndicators• Economic Economic

Income/povertyIncome/poverty

• SocialSocial HealthHealth

• BiophysicalBiophysical Soil erosionSoil erosion Water quality/quantityWater quality/quantity

Possible ScenariosPossible Scenarios

ScenariosScenarios• Provision of off-stream watering pointsProvision of off-stream watering points• Changes in water collection techniquesChanges in water collection techniques• Enforcement of existing riparian protection Enforcement of existing riparian protection

lawslaws• Improvement in rural road infrastructureImprovement in rural road infrastructure• Change in fertilizer use (purchased or Change in fertilizer use (purchased or

manure)manure)

GIS Data (1)GIS Data (1)

File name Feature type Description Related features

ballpark_towns point feature classRough locations of major towns and villages in the watershed.

boundary polygon feature class Watershed boundary .

ClimateStation point feature classRough locations of climate and precipitation monitoring stations.

contours_arc line feature classDigitized contour lines from topographic map for watershed, currently incomplete.

DailyPrecip relationship classRelates tabular records of daily precipitation to the climate state point feature class.

Climate Station point feature class and DailyPrecip

Ecology2003 relationship classRelates tabular records of river ecology data to the river ecology sampling sites point feature class.

Ecology2003Sites point feature class and Ecology2003data

Ecology2003data non-spatial object Tabular river ecology 2003 sampling data.Ecology2003Sites point feature class and Ecology2003 relationship class

Ecology2003Sites point feature class GPS-ed locations of ecology sampling sites.Ecology2003 relationship class and Ecology2003data

EgertonDailyRainfall non-spatial objectTabular data of daily precipitation at the Egerton University rainfall gauge.

Climate Station point feature class and DailyPrecip relationship class

fieldtrip1 point feature class

GPS-ed locations of fieldtrip sites within the watershed with references to associated digital photographs.

forest polygon feature classboundaries of forested area in region of the Njoro River digitized from topographic maps.

lake polygon feature class Lake boundary from digitized topographic maps.

MalachiSoil point feature class GPS-ed locations of Malachi's soil sampling sites.

Table 1. Contents of Njoro River Watershed personal geodatabase. Relationship classes are used to associate tabular data records (non-spatial objects) with feature classes. In the Njoro River Watershed geodatabase many of the sampling sites are represented as point feature classes and are linked to tabular data records via relationship classes.

GIS Data(continued)GIS Data(continued)

Table 1 continued.File name Feature type Description Related features

MeanMonthlyTemp relationship classRelates tabular records of mean monthly air temperatures to climate station locations.

ClimateStation point feature class and MeanMoTempsEg_Njoro

MeanMoTempsEg_Njoro non-spatial object

Tabular data of mean monthly temperatures at the Egerton University and Njoro Town Centre climate stations.

Climate Station point feature class and MeanMonthlyTemp relationship class

MonthlyRelativeHumidity relationship classRelates tabular data of mean monthly relative humidity to the climate station locations.

Climate Station point feature class and StationMeanMoRelHumidity

MothlyTotalPrecip relationship classRelates tabular data of total monthly precipitation to the climate station locations.

Climate Station point feature class and StationTotalRain

Ngata&TreeTopsHistoricDailyDischarge relationship class

Relates tabular data of Ngata and TreeTops historic daily discharge records to the river discharge gauge sites.

RiverGaugeSites point feature class and Ngata_TreeTopsHistoricDailyDischarge

Ngata&TreeTopsHistoricDailyDischarge non-spatial objectTabular records of historic daily discharge for the Ngata and TreeTops discharge gauges.

RiverGageSites point feature class and Ngata&TreeTopsHistoricDailyDischarge relationship class

njoroforestUTM polygon feature class

Boundaries of forested area in the Njoro River watershed digitized from topographic maps in a UTM projection.

NjoroRGages_c point feature class

GPS-ed locations of Njoro River discharge gauge sites, locations are similar to, but not the same as those in RiverGageSites point feature class

parkboundary polygon feature classThe boundary of Lake Nakuru National Park from digitized topographic maps.

railroad line feature classThe railroad lines in the watershed from digitized topographic maps.

RiverEcoSitesallUTM point feature classAll the river ecology sampling sites in a UTM projection.

GIS ongoing/to be collectedGIS ongoing/to be collected

OngoingOngoing• 100 soil samples recently delivered to 100 soil samples recently delivered to

lablab• Soil analysis ongoingSoil analysis ongoing

To be collectedTo be collected• Other soil coverages as availableOther soil coverages as available

Biophysical dataBiophysical data CollectedCollected

• GPS co-ordinates for water collection GPS co-ordinates for water collection pointspoints

• Water chemistry data (23 sites – 14 Water chemistry data (23 sites – 14 samples at each site 2 years)samples at each site 2 years)

Coliform countsColiform counts Nutrient content (phosphates, nitrates, Nutrient content (phosphates, nitrates,

organic matter)organic matter) AlkalinityAlkalinity

Ongoing/to be collectedOngoing/to be collected

Economic DataEconomic Data CollectedCollected

• Survey of 384 households within the Survey of 384 households within the watershedwatershed

GPS locationGPS location Gender, age, education, household size, income Gender, age, education, household size, income

(crops and livestock)(crops and livestock) Farm size, implements (donkey, donkey cart, Farm size, implements (donkey, donkey cart,

wheelbarrow, handcart)wheelbarrow, handcart) Household expenditureHousehold expenditure Input and output pricesInput and output prices Market access costMarket access cost Proportion of land in crops and in livestockProportion of land in crops and in livestock Some data on date of planting, harvest seeds, Some data on date of planting, harvest seeds,

input use, yieldinput use, yield• To be collected?To be collected?

Water use data – quantity/qualityWater use data – quantity/quality

Stakeholder dataStakeholder data

Completed participatory rural Completed participatory rural appraisals in 5 communities in the appraisals in 5 communities in the watershedwatershed• Identify issues/concernsIdentify issues/concerns• Still needs to be fully written upStill needs to be fully written up

To be completedTo be completed• Review of institutionsReview of institutions

Work PlanWork Plan StakeholdersStakeholders

• local community and institutionslocal community and institutions• Policy makersPolicy makers

DataData• Finish data collection 2004/2005 (potentially more Finish data collection 2004/2005 (potentially more

economic data/clean existing data)economic data/clean existing data) ModelingModeling

• Begin mid/late 2005Begin mid/late 2005 TOA Team BackstoppingTOA Team Backstopping

• What – HELP TOA!!!!, when? Mid/late 2005What – HELP TOA!!!!, when? Mid/late 2005 Reports & PresentationsReports & Presentations

• Conceptual framework/backgroundConceptual framework/background• Integrated/TOA write upIntegrated/TOA write up• Integration of TOA type analysis with WEAPIntegration of TOA type analysis with WEAP