MORPHOMETRIC DATAFlushing Rate (yr¹)

13,586,50019791993 OLIGOTROPHIC

MESOTROPHIC11.85.5

6,900

1.5Max. Depth (m):Mean Depth (m):Volume (m³):

Watershed Area (Ac.):

Shore Length (m):

WEBSTER LAKE, FRANKLIN, NH

TROPHIC CLASSIFICATION KNOWN EXOTIC SPECIESYear Trophic class

Surface Area (Ac.): 612Elevation (ft): 401P Retention Coef: 0.58

The Waterbody Report Card tables are generated from the DRAFT 2014 305(b) report on the status of N.H. waters, and are based on data collected from 2004-2013. Detailed waterbody assessment and report card information can be found at www.des.nh.gov/organizations/divisions/water/wmb/swqa/index.htm

Volunteer Lake Assessment Program Individual Lake Reports

11,136

Designated Use Parameter Category Comments

Phosphorus (Total) GoodAquatic Life The calculated median is from 5 or more samples and is < indicator and > 1/2 indicator and the chlorophyll a indicator is okay.

pH Slightly Bad >10% of samples exceed criteria by a small margin (minimum of 2 exceedances).

Oxygen, Dissolved Good There are at least 10 samples with one, but < 10% of samples, exceeding criteria.

Dissolved oxygen satura Slightly Bad There are >10% of samples (minimum of 2), exceeding criteria.

Chlorophyll-a Good The calculated median is from 5 or more samples and is < indicator and > 1/2 indicator.

Escherichia coli Very GoodPrimary Contact Recreation Where there are no geometric means, all bacteria samples are < 75% of the geometric mean. Where there are geometric means all single bacteria samples are < the SSMC and all geometric means are < geometric mean criteria.

Cyanobacteria hepatoto Slightly Bad Cyanobacteria bloom(s).

Chlorophyll-a Good There are at least 10 samples with one, but < 10% of samples, exceeding indicator.

BEACH PRIMARY CONTACT ASSESSMENT STATUS

WATERSHED LAND USE SUMMARY Fry, J., Xian, G., Jin, S., Dewitz, J., Homer, C., Yang, L., Barnes, C., Herold, N., and Wickham, J., 2011. Completion of the 2006 National Land Cover Database for the Conterminous United States, PERS, Vol. 77(9):858-864. For larger image contact NHDES.

Escherichia coli Bad There are >=1 exceedance(s) of the geometric mean and/or >=2 single sample criterion exceedances. One or more exceedance is >2X criteria.

WEBSTER LAKE - LAGACE TOWN BEACH

Escherichia coli Bad There are >=1 exceedance(s) of the geometric mean and/or >=2 single sample criterion exceedances. One or more exceedance is >2X criteria.

WEBSTER LAKE - GRIFFIN TOWN BEACH

Cyanobacteria Slightly Bad Cyanobacteria bloom(s). WEBSTER LAKE - LAGACE TOWN BEACHCyanobacteria Slightly Bad Cyanobacteria bloom(s). WEBSTER LAKE - GRIFFIN TOWN BEACH

Land Cover Category % Cover Land Cover Category % Cover Land Cover Category % CoverOpen Water 7.45Developed-Open Space 3.01Developed-Low Intensity 0.42Developed-Medium Intensity 0.04Developed-High Intensity 0

Barren Land 0.03Deciduous Forest 26.81Evergreen Forest 11.42Mixed Forest 37.07Shrub-Scrub 4.61

Grassland/Herbaceous 1.31Pasture Hay 4.8Cultivated Crops 0.86Woody Wetlands 1.8Emergent Wetlands 0.18

This epo t as ge e ated the NH DES Volu tee Lake Assess e t P og a VLAP . Fo o e i fo aio o ta t VLAP at - o sa a.stei e @des. h.go

Observations Refer to Ta le 1 and Histori al Deep Spot Data Graphi s) Chlorophyll-a: Chlo oph ll le els i eased g aduall f o Jul to Septe e ut e ai ed at lo le els a d less tha the

state edia . A e age hlo oph ll le els de eased f o a d e e the lo est easu ed si e ! Histo i al t e d a al sis i di ates sta le hlo oph ll le els si e o ito i g ega . Conductivity/Chloride: Deep spot a d t i uta o du i it a d hlo ide le els e e ithi lo to a e age a ges fo NH

lakes. Histo i al t e d a al sis i di ates sta le epili ei uppe ate la e o du i it si e o ito i g ega . E. coli: T i uta E. oli le els lu tuated f o lo to ele ated le els at Rt. I let a d Su ke Bk.. Lake A e T i . E. oli le els

e e ele ated o ea h sa pli g e e t a d this site o i ues to e hi it ele ated E. oli. The sa pli g p o edu e audit oted a e i de to olu tee s ot to tou h the i side of the otle ap as it ould i t odu e oss- o ta i aio f o o es ha ds i to the sa ple. Lake A e. a ket sa pli g i did ot i di ate upst ea sou es of E. oli ut pote iall o e lo alized sou es su h as ate fo l o pet aste. Su ke Bk. E. oli le els e e slightl ele ated i oth Ju e a d August follo i g ai e e ts. Bea e s e e oted upst ea a d ag i ultu al a i iies a also ha e o t i uted to the E. oli le els. Total Phosphorus: Epili ei phospho us le els e e lo i Ju e, i eased to a e age le els i Jul a d August, a d the

i eased to slightl ele ated le els i Septe e . A e age epili ei phospho us i eased slightl f o a d as e ual to the state edia . Histo i al t e d a al sis i di ates highl a ia le epili ei phospho us si e o ito i g ega . Metali ei iddle ate la e phospho us e ai ed sta le a d a e age. H poli ei lo e ate la e phospho us

as lo i Ju e a d the i eased as the su e p og essed to g eatl ele ated le els i Septe e . H poli ei sa ple depth as adjusted to a deepe depth to o e a u atel ep ese t the i pa ts of depleted o ge le els o phospho us le els. As dissol ed o ge le els deplete elo g/L i the h poli io , phospho us ou d to oto sedi e ts a e eleased i to the ate the e eai g a i te al sou e of phospho us loadi g. Rt. phospho us le els e e ithi a lo a ge a d Su ke Bk. phospho us le els e e a e age. Gag es Bk. phospho us le els e e slightl ele ated i Jul a d August ut ithi a o al a ge fo that staio . Lake A e T i . phospho us le els e e ele ated i Jul .

Transparency: T a spa e lu tuated f o o th to o th et ee lo o se a d high good alues. A e age t a spa e as good a d i p o ed f o a d as ete tha the state edia . Ho e e , histo i al t e d a al sis i di ates sig ii a tl de easi g o se i g t a spa e si e o ito i g ega . T a spa e easu ed ith the ie s ope VS as u h ete tha that easu ed ithout NVS a d likel a ete ep ese taio of a tual o diio s.

Turbidity: Epili ei a d etali ei tu idiies e e slightl ele ated i Septe e likel due to algal g o th. H poli ei tu idit as ele ated i Jul , August a d Septe e likel due to the fo aio a d a u ulaio of o ga i o pou ds i h poli ei ate s u de a o i o diio s. Rt. I let a d Su ke Bk. tu idiies e e ge e all lo . Gag es

Bk. a d Lake A e T i . tu idiies e e ele ated i Jul a d August a d lo lo o diio s likel o e t ated o ga i a ids a d esuli g i highl olo ed ate s ith highe tu idit . pH: Epili ei a d etali ei pH le els e e ge e all ithi the desi a le a ge . - . u its, ho e e ha e histo i all

lu tuated elo the desi a le a ge. Histo i al t e d a al sis i di ates elai el sta le epili ei pH ith ode ate a ia ilit et ee ea s. H poli ei a d t i uta pH le els e e ge e all less tha desi a le, e ept fo Su ke Bk.

Volunteer Lake Assessment Program Individual Lake reports Webster Lake, Franklin

5 Data Summary

NH Media Values: Media alues fo spe ii pa a ete s ge e ated f o histo i lake o ito i g data. Alkali it : . g/L Chloroph ll-a: . g/

Co du ivit : . uS/ Chloride: g/L Total Phosphorus: ug/L Tra spare : . pH: .

NH Water Qualit Sta dards: Nu e i ite ia fo spe ii pa a ete s. Results e eedi g ite ia a e o side ed a ate ualit iolaio .

Chloride: > g/L h o i E. oli: > ts/ L – pu li ea h E. oli: > ts/ L – su fa e ate s Tur idit : > NTU a o e atu al le el pH: et ee . - . u less atu all o u i g

Para eter Tre d E pla aio E pla aio Tre d Para eter Chlo oph ll-a Sta le T e d ot sig ii a t; data sho lo a ia ilit . T e d ot sig ii a t; data sho lo a ia ilit . Sta le Co du i it T a spa e Wo se i g Data sig ii a tl de easi g. T e d ot sig ii a t; data ode atel a ia le. Sta le pH epili io Phospho us epili io Sta le T e d ot sig ii a t; data highl a ia le.

Historical Water Quality Trend Analysis

Recommended Actions: Wate ualit at the deep spot has ge e all e ai ed ithi a good to a e age a ge si e . Ho e e , dissol ed o ge depleio i the h poli io has esulted i i te al phospho us loadi g to the lake hi h a fuel a o a te ia g o th. This highlights the i po ta e of edu i g phospho us loadi g to the lake f o ate shed sou es, pa i ula l th ough sto ate u of. Co i ue to ide if a eas i the ate shed he e sto ate i p o e e t p oje ts a e i ple e ted. Sou es of the lu tuai g Lake A e E. oli le els ha e ee dii ult to pi poi t. Follo p ope sa ple p o edu es to e su e o oss o ta i aio o u s he olle i g sa ples. Make ote of ate fo l, ildlife, do esi , a d ag i ultu al a i als that ould e o t i ui g to the a te ial load he sa pli g. A e e t ag ee e t ith

Pl outh State U i e sit ill help ith ate shed a age e t a i iies. Keep up the g eat o k!

Staio Na e Ta le . A e age Wate Qualit Data fo WEBSTER LAKE Alk. Chlo -a Chlo ide Co d. E. Coli Total P T a s. Tu . pH g/l ug/l g/l uS/ #/ l ug/l tu NVS VS Epili io . . . . . . . Metali io . . . H poli io . . . Gag es B ook . . . Lake A e T i . . . . Rt. I let . . . Su ke B ook . . .